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Fining focus on R&D, OEM and ODM of a full range of AC/DC power adapter, LED Driver power supply, waterproof power supply, PoE, PoE switch, etc.

Through nearly a decade of experience in designing the power supply, Fining is your outstanding choice and most reliable partner. Our factory has passed ISO9001 quality system certification. Every product has passed the most stringent ISO regulations in every aspect from design to production to ensure customers' satisfaction. Most of our products are certified with CE, FCC, ETL, UL, RoHS, SGS.
Fining is focus on leveraging its technology, research and development lead to bring competitive advantage to its partners.
In every stage of a product lifecycle, whether it is research & development, manufacturing, shipping, and handling, or after-service, Fining takes quality assurance and continuous improvement acti...
FAQ
  • IEEE 802.3 is the standard that defines the physical layer of Ethernet cabling. It includes wire type, signal level and bandwidth in 2003, the standard was updated to include PoE IEEE 802.3af defines ...
  • A POE injector, which is also called as a “midspan,” injects power onto an Ethernet cable. Thus it combines power with data which is from a non-PoE switch or “endspan.” It has an external power s...
  • Power over Ethernet (PoE) is also called PoE power supply. It is a technology that can transmit power and data to devices through Ethernet over twisted pair.Through this technology, devices such as Vo...
The 36W LED AC/DC drivers feature the constant voltage mode. The products operate from 100~240VAC and offer models with differentiated voltage ranging between 9V and 36V. Thanks to the high efficiency up to 85%, with the fanless design, the entire series is able to operate for -40°C ~0°C.
After we having sourced many companies, at last we chose Fining. Their quality and stability are beyond my expectation. I have to say Fining is a real trustworthy partner.
In the past three years, Fining’s products have been running steadily, and achieved its function excellently. We are satisfied with their profession and quality.
Their PoE system helped us save 18% electricity consumption, maintenance cost substantially. It’s a good number for cost containment.
IEEE 802.3 is the standard that defines the physical layer of Ethernet cabling. It includes wire type, signal level and bandwidth in 2003, the standard was updated to include PoE IEEE 802.3af defines the voltage and power availability of devices on a network. The specification provides PoE with up to 15.4 watts of power. The specification was updated again in 2009. The IEEE 802.3 at provides higher power (25.5 watts), called PoE +.

The IEEE-compliant PoE injector provides 44 to 57 volts. The effective distance of the cable is the same as the standard ethernet distance of 100 meters (328 feet). There are two modes, A and B, for powering devices. These modes define the polarity of the wire pair and the voltage used for the power supply. The new PoE injector can provide more than 50 watts of power to a network-connected device. These higher power Ethernet devices use two pairs of wires to transmit power to the device.

802.3af (2003)
  • Power Sourcing Equipment (PSE) transmitted a maximum of 15.4W which assured delivery of 12.95W (350mA) to the Powered Device (PD).
  • Total throughput was limited to 100Mbps and allowed power to be distributed over only two pairs, and in two different modes (Mode A and Mode B) as seen in Figure 1 below.

Figure 1

IEEE 802.3at (2009)
  • Power Sourcing Equipment (PSE) transmitted a maximum of 30W which assured delivery of 25.5W (600mA) to the Powered Device (PD).
  • Total throughput was limited to 1000 Mpbs or 1Gbps.
  • The same Mode A and Mode B were used again, and the same pairs are used to transmit power. The difference with 802.3at is that all four pairs are used to transmit data packets to achieve 1Gbps throughput (Figure 2).

Figure 2
IEEE 802.3bt (2018)
  • Two power levels emerging: Version 1 - 60W from Power Sourcing Equipment (PSE) and 50W assured at Powered Device (PD) side. Version 2 - about 100W from PSE and about 80W assured at PD side.
  • All four pairs will transmit data packets and power.
  • Total throughput will be 10Gbps, a 10x increase over previous generations.
  • Backwards compatible with previous generations of PoE; 802.3af and 802.3at.
  • Figure 3 illustrates a proposed 4-pair power delivery solution.

Figure 3
A POE injector, which is also called as a “midspan,” injects power onto an Ethernet cable. Thus it combines power with data which is from a non-PoE switch or “endspan.” It has an external power supply.

PoE Injector
The POE injector is well suited for low-power installations where power outlets are not available. As a result, greater flexibility can be achieved by providing access to equipment installed in hard-to-reach areas with minimal impact on existing structures and budgets.


The product is a highly reliable, 150W desktop style single-output AC-DC adaptor series. This product is equipped with a 3-pin (with FG) standard IEC320-C14 power plug, adopting the input range from 100VAC to 240VAC.
The product is a highly reliable, 36W desktop style single-output AC-DC adaptor series. This product is equipped  with a 3-pin (with FG) standard IEC320-C6 power plug, adopting the input range from 100VAC to 240VAC.
The 24W LED AC/DC drivers feature the constant voltage mode . The products operates from 100~240VAC and offers models with differentrated volatage ranging between 9V and 36V. Thanks to the high efficiency up to 85%,with the fanless design, the entire series is able to operate for -40°C ~0°C.
The power adapter can provide 36W output constantly. It is featured with high efficiency. It is very suitable for application of IT equipment,consumer electronics, home appliance and etc.
The power adapter can provide 60W output constantly. It is featured with high efficiency.It is very suitable for application of IT equipment,consumer electronics, home appliance and etc.
The 100W dual output switching power supply feature the constant voltage mode . The products operates from 100~240VAC and offers models with 12V and 24V. Thanks to the high efficiency up to 85%,with the fanless design, the entire series is able to operate for -40°C ~0°C.
The 350W quad output switching power supply feature the constant voltage mode . The products operates from 100~240VAC and offers models with 12V and 24V. Thanks to the high efficiency up to 85%,with the fanless design, the entire series is able to operate for -40°C ~0°C.
The 60W single output switching power supply feature the constant voltage mode . The products operates from 100~240VAC and offers models with 12V and 24V. Thanks to the high efficiency up to 85%,with the fanless design, the entire series is able to operate for -40°C ~0°C.
At present, the variety, quantity, performance and quality of environmental monitoring equipment in China are far from meeting the needs of practical work. Most of the monitoring stations in China have low technical content, single function, poor stability and reliability, which need to be updated urgently. Relevant experts believe that the production enterprises of environmental monitoring instruments and equipment will be divided into two directions. One is a large-scale comprehensive enterprise with international competitiveness, like Fining. The other is a group of highly specialized small and medium-sized enterprises, which are mainly good at a certain kind of technology or a certain product or service. Their characteristics are small scale, specialized personnel and rich experience. With the rapid development of a large number of production enterprises, the situation that only imported instruments are used in the field of environmental monitoring in China has been changed. At the same time, enterprises, universities, scientific research institutions, design units, financial and market intermediaries realize communication and interaction, promoting the formation of large-scale production enterprises and large-scale market.

Problems in the Market of Environmental Monitoring Instruments in China

Most of the environmental monitoring instruments in our country are medium and low-grade products produced by small and medium-sized enterprises, with general technical level, few kinds of products, high failure rate and short service life, which makes the monitoring frequency low, sampling error large, monitoring data inaccurate, and can not reflect the status of sewage discharge in time. It not only affects the scientific decision-making of environmental management and the seriousness of law enforcement, but also easily frustrates the enthusiasm of enterprises to control pollution and protect the environment. For example, the on-line monitoring system of various pollution sources has not solved the measurement problems caused by high temperature, high humidity and high particulate matter content, and the on-line automatic monitoring system of smoke and dust is basically blank in China, which greatly limits the implementation of the total amount control system of smoke and dust.

The research and development ability is low, and the production capacity of online monitoring instrument system is low, which can not meet the needs of the market. High-quality analyzers, special monitoring instruments and automatic monitoring systems are mostly imported from abroad, so domestic instruments occupy a small share. Among the domestic instruments in our country, the share of air monitoring instruments is about 70%, and that of water quality monitoring instruments is about 60%. Most of these instruments are at the level of the 1980s and can not meet the actual needs. However, the instruments needed by sewage treatment plants are still imported. The R&D expenditure of large foreign enterprises generally accounts for 5-10% of the total sales of enterprises, and only 1% of the better enterprises in China, and the product life cycle is much larger than that of developed countries.

The management ability is poor, and the labor productivity is not high. What’s more the tendency of convergence is serious. For the reasons, some experts believe that are as follows.

Firstly, the operation mechanism of large state-owned enterprises has not played a good role as the backbone;
Secondly, small enterprises have flocked to the top, lacking technology, lack of funds, low-level repetition is more, the quality and performance of instruments can not compete with imported instruments abroad;
Thirdly, the lack of close cooperation mechanism between research institutes and enterprises, can not achieve rapid industrialization;
Fourthly, the government. The government's investment and venture capital in the development of environmental science instruments are insufficient.

With the growing maturity of PoE Ethernet power supply technology, more and more network products are providing support for PoE power supply standards. There are also various forms of PoE power supply in the market. Below, we analyze how to select PoE power supply that meets our requirements and what should be paid attention to when selecting PoE power supply.

1. According to the actual needs of the site, select the corresponding port number

PoE power supply has single port, double port, 4 ports, 8 ports, 12 ports, 16 ports and 24 ports, etc., which can meet the needs of PoE power supply on site. When using multi-port PoE power supply, one or two ports can be saved for actual use, in case of capacity increase or emergency standby.

2. The determination of power is the most important point in the selection of PoE power supply

With more and more products supporting PoE power supply, the power of PD powered devices may be high or low. When choosing PSE that matches the PSE, PoE power suppliers whose output power is higher than the rated power of PD powered devices should be selected. When selecting multi-port PoE power supply, the sum of rated power of all power receiving devices should be less than the actual total output power of PoE power supply, leaving enough redundancy to make the PoE system work in a more stable state. Fengrunda PoE power supply has a variety of different power (single port output), such as 15.4w, 30W, etc., please confirm your needs before use.

3. Confirmation of network transmission rate

The data transmission of PoE power supply is divided into 10/100m adaptive and 10/100/1000m adaptive. When the transmission rate required by the network is gigabit transmission, the gigabit PoE power supply must be selected.

4. IEEE802.3af /at standards allow PSE to have three types of power supply sequence:

1. The 4 and 5 lines in the network are positive, and the 7 and 8 lines are negative.
2. The 1 and 2 lines in the network are negative, and the 3 and 6 lines are positive.
3. The 1 and 2 lines in the network line are positive, and the 3 and 6 lines are negative.
At present, most of the power receiving devices support any one of the above three line sequences for power supply. However, some power receiving devices, such as AP and network monitor, only support one power supply line sequence for power supply. Before selecting PoE power supply, confirm the power supply sequence of the receiving equipment through the product specification of the receiving equipment or with the manufacturer's technical support. Fengrunda's PoE power supply mode is by default the terminal bonding method (1/2, 3/6 line pair), and the intermediate bonding method (4/5, 7/8 line pair) is optional. The majority of users must confirm what type of equipment they own before purchase.

5. IEEE 802.3af standard

The standard clearly defines PSE's output voltage as DC44V ~ DC57V. Considering the loss of network cables, the input voltage of PD of the electrical equipment is between DC36V and DC57V, and the typical value is DC48V. Many current receiving devices support both power adapter and PoE power supply. Although the power adapter terminal of many powered devices uses DC power supply lower than 48V, such as DC12V, DC5V, etc., PoE power supply of the powered devices can be directly supplied as long as the PoE power supply of the powered devices conforms to ieee802.3af standard.

6. Choose lightning protection PoE power supply

With the installation of electrical equipment in different locations, the external environment of lightning surge, static and other shocks are also increasing, in order to better protect the power supply system of switches in the network and PSE, lightening proof PoE power supply is needed. While using PSE to supply power to the electrical equipment, it can effectively prevent surges and static electricity from damaging the data exchange and PSE's internal power system through the network cable of the electrical equipment.

The series are constant voltage mode output LED driver.
The series of products are suitable for outdoor because of IP67 and great surge immunity. The user can select corresponding model according to market requirements.
90W Single-port Power over Ethernet equipment, the injector is suitable for indoor using, 100V ~ 240VAC input voltage. Connected the injector and the network terminal equipment with by Cat5 cable.
The 12W PoE Splitter fully complies with IEEE 802.3af standard, and can work with all IEEE 802.3af PoE compliant PSE (Power Source Equipment) or PoE Supplier Adapter, such as 48V IEEE 802.3af/at PoE injector orother equivalent product, to deliver 12V, 9V or 5V Direct Current to where there are no power line or outlet, where you wish to fix device such as AP, IP Camera or IP Phone, etc.
The 24W PoE Splitter fully complies with IEEE 802.3af standard, and can work with all IEEE 802.3af PoE compliant PSE (Power Source Equipment) or PoE Supplier Adapter, such as 48V IEEE 802.3af/at PoE injector orother equivalent product, to deliver 12V, 9V or 5V Direct Current to where there are no power line or outlet, where you wish to fix device such as AP, IP Camera or IP Phone, etc.
The series are constant voltage mode output LED driver. The series of products are suitable for outdoor because of IP67 and great surge immunity. The user can select corresponding model according to market requirements.
Established in 2010, Shenzhen Fining Electronics Co., Ltd (Fining Electronics) is a national high-tech enterprise.

Fining focus on R&D, OEM and ODM of a full range of PoE products, LED power supply and power adapter.

Through nearly a decade of experience in designing these products, Fining is your outstanding choice and most reliable partner. Our factory has passed ISO9001 quality system certification. Every product has passed the most stringent ISO regulations in every aspect from design to production to ensure customers' satisfaction. Most of our products are certified with CE, FCC, ETL, UL, RoHS, SGS.

Our products are widely used in IT communication, lighting and household appliances etc, comply with the various needs of the market.

Our products are continually exported to Europe, Middle East, Russia, USA, North America, Singapore, India and etc. Excellent product quality and perfect service were widely recognized and praised by our consumers.

Fining always insists that quality is our ultimate guiding principle. We have already invested heavily in high-tech equipment to ensure continuous innovation as well as meeting with our customers' needs.

Looking ahead, Fining will continually adopt new technology, deepen understanding with industry, expand existence in the emerging segment market, provide more valuable services to customers.

Company Structure





History


2010: Shenzhen Fining Electronics Co., Ltd was established.
2012: Certified with ISO9001: 2000 and expanded products to the IP67 power supply and PoE products. Obtained the product safety and EMC certification.
2013: Developed full range PoE injector and PoE adapter.
Obtained the UL factory certification.
2014: Developed industrial switch and commercial switch.
2015: Developed 15W PoE splitter and wireless charger. Passed the ETL factory audit
2016: Developed 220W desktop power adapter and 90W PoE injector.
2017: Obtained the certification of intellectual property management system certification.
Obtained 2 product patents.
The trademark "Fining" was registered in US, UN, UK, and Mainland China.
2018: Developed PD charger and 60W 802.3 bt PoE injector.
FINING Electronics offers a comprehensive selection of Power of Ethernet (PoE) networking equipment including injectors and splitters. PoE technology simplifies the deployment of a network by delivering power and data via a standard Ethernet cable. PoE gives network administrators the freedom to deploy networking equipment at any location, without having to rely on power outlet sources.
FINING Electronics's PoE splitters split the simultaneous transmission of data and power into two separate outputs. PoE splitters offer the inverse functionality of PoE injectors. Our 802.3af/at splitters offer different data rate options and interfaces to help network administrators complete their deployment with the right unit.

Generally, plug-in power adapters are usually used below 36W. The characteristics of this kind of power adapter are that AC wires are not needed, which saves cost and space, and does not need the space for the table goods of the discharge power supply. It is safe to plug directly into the plug-in board.
Waterproof power supply is used in the case of dust-proof and waterproof IP6, with multiple protection such as short circuit, over current, overload, etc.
Fining's power supply has reached the standard of Meanwell's products quality which we purchased before. While it has great advantages in procurement cost. We are very satisfied with its quality and good service.
Power over Ethernet (PoE) is also called PoE power supply. It is a technology that can transmit power and data to devices through Ethernet over twisted pair.

Through this technology, devices such as VoIP, wireless base stations, cameras, hubs, and computers can be powered by PoE technology.

Products using PoE


IP Camera

VoIP Phones


Wireless Access Points


Since electronic devices powered by Ethernet can be used without an additional power outlet, the time and money for configuring the power cord can be eliminated, and the cost of the entire equipment system is relatively reduced. RJ-45 sockets are widely used all over the world, that makes so all PoE devices are compatible. This technique is often compared to the traditional telephone network (POTS), which also receives power and data (although analog data) on the same cable. PoE does not need to change the Ethernet cable layout to operate, thus the PoE system not only saves cost, but also has the ability to control the power on and off remotely.

PoE power supply terminal is divided into Power Sourcing Equipment (referred PSE) and the receiving end (Powered Device, referred to as PD).

PSE

Power sourcing equipment (PSE) refers to devices such as a network switch that provides (sources) power on the Ethernet cable. When the device is a switch, it is commonly called an endspan. Otherwise, if it's an intermediary device between a non PoE capable switch and a PoE device, it's called a midspan. An external PoE injector is a midspan device.

PD

Powered device (PD) refers to devices powered by a PSE and thus consuming energy. Examples include wireless access points, VoIP phones, and IP cameras.
Many powered devices have an auxiliary power connector for an optional, external, power supply. Depending on the PD design, some, none, or all power can be supplied from the auxiliary port, with the auxiliary port sometimes acting as backup power in case PoE-supplied power fails.
The product is a highly reliable, 100W desktop style single-output AC-DC adaptor series. This product is equipped with a 2-pin (no FG) standard IEC320-C8 power plug, adopting the input range from 100VAC to 240VAC.
The 250W quad output switching power supply feature the constant voltage mode . The products operates from 100~240VAC and offers models with 12V and 24V. Thanks to the high efficiency up to 85%,with the fanless design, the entire series is able to operate for -40°C ~0°C.
Power adapter is a power transformer for small portable electronic equipment and electronic appliances. It comes into being because in real life, electronic devices are often not able to directly use household electricity. Because the power supply voltage used in the home is 220 volts, while the power supply voltage for common electronic products is about 5 to 20 volts. So the role of the power adapter is critical (module power).
With it, we can use these electronic products conveniently and safely. You're all familiar with power adapters, because if you have a laptop, you need a power adapter. But the power adapter is not only used in laptop computers, its application range is very wide, so in what areas can the power adapter be used?

1. Electronic and digital products

Electronic and digital products have filled our life. The use of mobile phones, tablets, laptops is gradually increasing, this time, the use of power adapter is also increasing. It can be said that the market development of electronic and digital products has led to the development of the power adapter industry. Large user groups are the foundation of industrial development. In today's rapidly changing technology, explosive growth of various electronic products is bound to lead to the vigorous development of affiliated industries. As the foundation of these electronic products, the function of power adapter is irreplaceable.

2. Energy-saving lamps

With the implementation of the national energy saving and emission reduction policy, LED energy-saving lamps have been accepted by the majority of consumers, and their brightness and energy-saving effect are acceptable to people. In this case, the use of power adaption will be further increased. There are more than one billion people in China, whose lighting consumption is a huge number, and the use of power adapter is also very huge. It is doomed that the market of power adapter will expand with the continuous expansion of electronic products market, and the high-quality power adapter will become the first choice of consumers.

3. Industrial production

For many electronic devices, the normal voltage cannot be used, which must use a power adapter; LCD normal operation is also inseparable from the power adapter.
The above is just a part of the commonly used, power adapter can also be widely used in security cameras, set-top boxes, routers, lights, massage machines and other equipment. The application of such a wide range of power adapter, I believe that the prospect of development is very broad.

Everyone who has done the development work has such experience, testing switching power supply or hearing the sound of leakage or high-voltage arc pulling of similar products in the experiment is not invited. The sound is loud or small, or sometimes absent. Its rhythm is deep or harsh, or changeable.

1. Transformer is poorly impregnated, including not containing Varnish whistling and causing spikes in waveforms, but generally has normal carrying capacity. It should be noted that the higher the output power, the more the scream, while the smaller the power, the less obvious the performance. I have had bad experience of overloading in a 72W charger product, and found that there are strict requirements on the material of magnetic cores in this product (the customer requirements of this product are more stringent). Additionally, when the transformer is poorly designed, it is also possible to produce abnormal vibration when working.

2. WMC grounding fault. Usually, some of the products will work normally, but some of them can not be loaded and may not be able to start up. Especially when some low power IC is used, it is more likely that it will not work properly. I have used the SG6848 test board, because I did not have a thorough understanding of IC performance, I rushed to layout based on experience, and the result was that the wide voltage test could not be done.

3. Opto Coupler operating current point wiring error. When the position of the working current resistance of the optocoupler is connected before the secondary filter capacitor, there is also the possibility of screaming, especially when there is more load.

4. Grounding wire fault of Regulator IC TL431. The grounding of the same secondary reference voltage regulator IC has similar requirements as the grounding of the primary IC. That is, they can not be directly connected with the cold, geothermal and geothermal transformer. The consequence of this connection is that the carrying capacity decreases and the whistle is proportional to the output power. The PCB in the last article made such a mistake, which was later corrected by JACKY WANG. When the output load is large and close to the power limit of the power supply, the switching transformer may enter an unstable state. In the previous period, the duty cycle of the switch tube is too large and the turn-on time is too long, so the excessive energy is transmitted through the high-frequency transformer. The energy storage inductance of DC rectifier is not fully released in this cycle, and PWM judges that there is no driving signal or duty cycle which makes the switch on in the next cycle. The switching tube is in the cut-off state or the turn-on time is too short in the following whole cycle. After the energy release of the energy storage inductor for more than one whole cycle, the output voltage drops, and the duty cycle of the switching tube in the next cycle is also large. In this way, the transformer will vibrate at a lower frequency (frequency with regular intermittent full cut-off period or drastic change of duty cycle) and produce a lower frequency sound that can be heard by human ears. At the same time, the fluctuation of output voltage will also increase compared with normal operation. When the number of intermittent full-cut-off cycles per unit time reaches a considerable proportion of the total number of cycles, it will even reduce the vibration frequency of transformers working in the supersonic band, enter the audible frequency range, and emit sharp high-frequency "whistle". At this time, the switching transformer works in a serious overload state, and it is possible to burn out at all times. This is the origin of "screaming" before many power sources burn down. I believe that some users have had similar experiences.

Intermittent full cut-off cycles may also occur when no load or light load occurs. Switching transformer also works in overload state, which is also very dangerous. This problem can be solved by presetting the false load at the output. But it still happens occasionally in some "saving" or high-power sources. When there is no load or the load is too light, the back EMF generated by the transformer during operation can not be well absorbed. In this way, the transformer will couple many clutter signals to your 1.2 winding. This clutter signal includes many AC components of different spectrum. There are also many low-frequency waves. When the low-frequency wave is consistent with the natural oscillation frequency of your transformer, the circuit will form low-frequency self-excitation. The core of the transformer does not make sound. We know that the range of human hearing is 20-20KHZ. So when we design the circuit, we usually add the frequency selection circuit to filter out the low frequency components. From your schematic diagram, you'd better add a band-pass circuit to the feedback loop to prevent low-frequency self-excitation, or make your switching power supply a fixed frequency.
Fining focuses on leveraging its technology, research and development lead to bring competitive advantage to its partners.

Mission
Continue innovation for better future.
Provide high performance and high-reliability product to all customers.

Vision
Being the leading brand of power supply manufacturer.

Competitive Advantages
Provide one-stop solution from components to complete products.





Product Development Process



Product Development Process
FINING is the power adapter, switching power supply and PoE products manufacturer in Shenzhen. FINING Electronics offers a comprehensive range of power adapters to respectable clients. The output  power of FINING's power adapters ranges from 0.3W to 220W. The output voltage is wide, which can change from 1.5V to 56V. These power adapters offered by us are known for their high-frequency technology, compact design, and low maintenance. The housing of the adapter includes wall plug-in type and desktop type for your choice. Surely you can never worry about the safety problems, since all the FINING's products have protection of over current, over voltage and short circuit, all of our products passed international quality approvals like UL, FCC, etL, CB, CE, GS, certificates and meet energy efficiency VI. And they also are up to the newest safety standard of IEC62368, IEC60950, IEC61558 and IEC60335 etc. In addition to this, the offered range is applicable in different areas such as consumer electronic devices, telecommunication devices, office facilities, industrial equipments. Carrying full safety agency approvals, the power adapter afford to meet your requirements. It is available in different customized specifications and forms as per the diverse requirements of valued clients etc. You will also find FINING's adapter in Automotive starters and Water Pump products and many other machines and equipment.
FINING Electronics's PoE injectors enable network administrators to pair PoE-ready networking devices with non-PoE devices to create a flexible network architecture. PoE injectors converge power and data inputs into a simple PoE output and simplify the deployment of powered devices such as VoIP phones, IP surveillance cameras, and WAPs Our 802.3af /at options offer a simple plug-and-play installation with mid-span, gigabit, and industrial injector options.
Desktop power adapter, factory-produced, with PSE, UL, CUL, FCC, CB, CE, LVD, EMC, GS, SAA, C-Tick, RCM, KC, CCC and other global certification. It complies with the five latest safety standards of IEC62368, IEC60950, IEC61558, IEC60335 and IEC60065.
Typical LED drivers on the market today include two types, linear drivers and switch drivers; the approximate range of application is shown in Figure 2. Switching regulators are used for high current applications with currents greater than 500 mA because linear actuators are limited to their own structural reasons. Provides such a large current; linear regulators or split regulators are typically used in low current applications with currents below 200mA; linear regulators can be used in medium current applications from 200 to 500mA. A switching regulator can be used.
Specifying Power over Ethernet brings many advantages to an installation:

  • Save Time and cost-by reducing the time and cost of installing power cables. Network cables do not require a qualified electrician to install them, and can be located anywhere.
  • Flexibility-no need to connect the power outlet, IP camera and wireless access point devices can be placed in the most needed place, if needed, can easily reposition.
  • Secure-PoE delivery is intelligent and designed to protect network devices from overload, strong or incorrect installation.
  • Reliability-the PoE power comes from a central and universally compatible source, rather than a collection of distributed wall adapters. It can be backed up via uninterruptible power supply, or it can be easily disabled or reset by control.
  • Scalability-having power available on the network means the installation and distribution of network connections is simple and efficient.
The product is a highly reliable, 60W desktop style single-output AC-DC adaptor series. This product is equipped with a 2-pin (no FG) standard IEC320-C8 power plug, adopting the input range from 100VAC to 240VAC.
In every stage of product lifecycle, whether it is research & development, manufacturing, shipping, and handling, or after-service, Fining takes quality assurance and continuous improvement activities seriously.

With the aim to always exceed customers' expectation as well as meeting a diverse set of customer requirements, Fining's high-quality products come fully certified and compliant with internationally recognized testing and safety standards.

With reliability and quality of our product as Fining's top priority, all products researched, designed, and manufactured by Fining is fully compliant with international safety and quality standards. In meeting with world-class customers'expectations, our quality management system has been approved and certified for ISO 9000.

Quality Assurance System

FINING Electronics offers a wide range of LED power supplies and LED driver power supplies suitable for outdoor and indoor light. With highest efficiencies of over 85%, FINING offer  high reliability LED driver power supplies backed up by the Industry 2 year warranty. With IP67 (waterproof) ratings and wide operating temperature ranges, these LED driver power supplies are ideal for use in a wide range of industrial lighting applications.
Switching power supplies, sometimes referred to as SMPS power supplies, switchers, or switch mode power supplies, regulate the output voltage using a complex high frequency switching technique that employs pulse width modulation and feedback. Acopian's switching power supplies also employ extensive EMI filtering and shielding to attenuate both common and differential mode noise conducted to the line and load. Galvanic isolation is standard in our switchers, affording our users input to output and output to ground isolation for maximum versatility. Switching regulated power supplies are highly efficient, small and lightweight, and are available in both AC-DC single and wide-adjust output and DC-DC configurations. Our Low Profile wide adjust output switching power supplies can be voltage or current regulated and are externally programmable.
Many Internet connected devices, such as IP cameras, VoIP phones, WIFI radios, and Ip access card readers, use Power over Ethernet. A single network cable transmits data and power to the device, making installation simple. Data uses one set of wires, and power uses another set of wires in a network cable.
Devices that plug power into certain wire pairs in an Ethernet cable are called injectors or MIDSPAN. Use a separate power supply (injector) or use an Exchanger containing built-in PoE to inject power to an Ethernet cable. Many devices using PoE comply with the IEEE standard. But be careful. Some devices don't meet this standard. Before using PoE, it is important to know exactly what voltage and current is required for the device. Here's a review of the technology.

PoE Injector

In all cases, electricity is sent over a network line. In diagram A, power is supplied on the same wire as the signal. In Mode B configuration, power is provided through two sets of optional wires in the network cable.
The following figure shows the pattern a configuration. The power supply is provided by a Exchanger, which Exchanger includes a PoE on a port or an injector connected between the switch and the device.


PoE Mode A Diagram

The following figure shows the Mode B configuration. In this case, power from the switch or ejector is supplied on a separate network line. Many devices are designed to receive power using either mode a or mode B.


PoE Mode B Diagram

There are some passive PoE sources and there are “active” or “smart” type sources.  The “active” type communicates with the device. This provides device protection that can prevent damage caused by short circuits, as well as providing overcurrent and overvoltage protection. The passive PoE sources are less expensive and provide power without any verification from the device.
Power sources that conform to the IEEE standard include network switches individual or multiport PoE injectors (or midspans).

Fining focus on R&D, OEM and ODM of a full range of PoE products, LED power supply and power adapter.

Through nearly a decade of experience in designing these products, Fining is sure your outstanding choice and most reliable partner. Our factory has passed ISO9001 quality system certification. Every product has passed the most stringent ISO regulations in every aspect from design to production to ensure customers' satisfaction. Most of our products are certified with CE, FCC, ETL, UL, RoHS, SGS.
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The power adapter can provide 6W output constantly. It is featured with high efficiency. It is very suitable for application of IT equipment,consumer electronics, home appliance and etc.
A splitter is a device that is the opposite direction of the Injector. It has two output cables: one supplies data and the other power. It is used to deploy remote non-PoE devices with no nearby AC outlets.

A splitter allows a non-compliant device to upgrade to PoE. By plugging into the network connection, it can pull power, and convert it into low-voltage ranges as required.





The difference between the injector and separator is that the PoE injector delivers power to a PoE device receiving data through an existing non-PoE switch. The splitter also provides power, but it does so by separating the power from the data and feeding it into separate inputs that can be used by non-PoE compatible devices.
The power adapter can provide 15W output constantly. It is featured with high efficiency. It is very suitable for application of IT equipment,consumer electronics, home appliance and etc.
Both the POE injector and the POE splitter deliver power according to each of the four power sources. The newer the device is, the higher the power level most likely to be required for the PoE Product List Type-3 is the current mainstream The Type 4 product is rising rapidly.

Levels of Power

IEEE Standard

Watts Supplied

Type 1

IEEE 802.3af

Up to 15.4W

Type 2

IEEE 802.3at

Up to 30.8W

Type 3

Ultra PoE/802.3bf

Up to 60W

Type 4

IEEE 802.3bt

Up to 960W


The power adapter can provide 24W output constantly. It is featured with high efficiency. It is very suitable for the application of IT equipment,consumer electronics, home appliance and etc.
Passive PoE: also known as "always on”. Power is delivered immediately without negotiation.
Active PoE: IEEE 802.3 af / at (active PoE) , standardized solution to provide power from a power supply device after negotiation with the receiving device.


PoE 802.3af/at

Passive PoE

Related cost*

Medium

Low cost*

Max.cable distance

100m

100m

Power Injection

After Negotiation

Immediately

Ethernet Support

10/100/1000 Mbit/s

10/100 Mbit/s(injected pairs +4,5 and -7,8)

Standard

802.3af/at

N/A, use by some vendors such as Mikro Tik or Ubiquity

Robust Against Wrong Cabling

Yes

No. Only anchor device can be connected into PoE socket!

Never connect to PC or another network device.

The single-port PoE injectors provide a simple, economical, high-performance and intelligent way for Ethernet PoE power supply and data communication.
Small, sleek, and compact design.
Smart IC charging.
PD & QC3.0 technology. Rapid Charging.
Through LPS (Limited Power Supply) test.
Overcurrent protection
Overvoltage protection
Electronic short circuit protection.

60W Single-port Power over Ethernet equipment, the injector is suitable for indoor using, 100V~240VAC input voltage. Connected the injector and the network terminal equipment with by Cat5 cable.
The single-port PoE injectors provide a simple, economical, high-performance and intelligent way for Ethernet PoE power supply and data communication. It's an ideal choice for those who need the superior quality project because of its simple use, easy to install, superior performance and cost-effective.
1.Preface
Monolithic switching power supply integrated circuit has the advantages of high integration, high cost performance, the simplest peripheral circuit and the best performance index. It can form an isolated switching power supply without power frequency transformer with high efficiency. From 1994 to 2001, a series of monolithic switching power supply products, such as TOPSwitch, TOPSwitch II, TOPSwitch FX, TOPSwitch GX, TinySwitch, TinySwitch II and so on, have been successively introduced in the world. They have become the preferred integrated circuits for developing medium and small power switching power supply, precision switching power supply and switching power supply modules.
High frequency transformer is an important part of switching power supply for energy storage and transmission. The performance of medium and high frequency transformer in monolithic switching power supply not only has a great influence on power efficiency, but also has a direct bearing on other technical indicators and electromagnetic compatibility (EMC). Therefore, a high efficiency high frequency transformer should have low DC loss and AC loss, low leakage inductance, small distributed capacitance of winding itself and small coupling capacitance between windings. The main points of its design are described below.
2. Reducing Loss of High Frequency Transformer
2.1 DC Loss
DC loss of high frequency transformer is caused by copper loss of coil. In order to improve the efficiency, we should choose the thicker conductor as far as possible, and take the current density J = 4 ~ 10A / mm2.
2.2 AC Loss
AC loss of high frequency transformer is caused by skin effect of high frequency current and loss of magnetic core. High frequency current always tends to flow through the surface when passing through the conductor. This will reduce the effective flow area of the conductor and make the AC equivalent impedance of the conductor much higher than the copper resistance. The penetration ability of high frequency current to conductor is inversely proportional to the square root of switching frequency. In order to reduce AC copper impedance, the conductor radius should not exceed twice the depth of high frequency current. The relationship between the wire diameter and switching frequency is shown in Figure 1. For example, when f = 100kHz, the diameter of conductor is 0.4mm in theory. But in order to reduce the skin effect, the thinner wires can actually be wound side by side, instead of a thick wire.
The core loss of the high frequency transformer also reduces the efficiency of the power supply. The AC flux density of the transformer can be estimated by the following formula:

Bac=(0.4pi*Np*Ip*Krp)/2delta
In formula B: BAC is AC flux density in T;
NP and IP are primary turns and primary peak current respectively.
KRP is the ratio of primary pulsating current to peak current.
Delta is the air gap width of the core in cm.
To design a high frequency transformer working in continuous mode, the typical value of BAC is about 0.04-0.075T. The loss of ferrite core at 100kHz should be less than 50mW/cm3.
3. Reducing Leakage Inductance of High Frequency Transformer
Leakage inductance must be minimized in the design of high frequency transformers. Because the larger the leakage inductance, the higher the peak voltage amplitude, the greater the loss of the drain clamp circuit. This will inevitably lead to lower power efficiency. For a high frequency transformer which meets the insulation and safety standards, its leakage inductance should be 1%-3% of the primary inductance when the secondary circuit is open. In order to reach the target below 1%, it will be difficult to achieve in the manufacturing process. The following measures can be taken to reduce leakage inductance:
1) Reduce turn number NP of primary winding;
2) Increase winding width (e.g. select EE core to increase skeleton width b);
3) Increase the ratio of height to width of windings;
4) Reduce the insulation layer between the windings;
5) Increase the coupling between windings.
3.1 Reduce the number of primary winding turns and increase the ratio of height to width.

The leakage inductance can be effectively reduced by choosing suitable core shape, reducing the number of primary turns and increasing the ratio of height to width. The leakage inductance is proportional to the square of the primary turns. The size of the selected core should be large enough to enable the primary winding to be wound into two or less layers, so that the primary leakage inductance and distributed capacitance can be minimized. Keep in mind that it is not suitable to use the core of a short and fat window because of its large size, small ratio of height to width and large leakage inductance. It corresponds to POT, RM, PQ and some E-type cores. It is suggested to use thin and high core, which has a high aspect ratio and corresponds to EE, ETD, EI and EC cores.
Triple Insulated Wire (Triple Insulated Wire) is a newly developed high performance insulated conductor in recent years. The conductor has three insulating layers, with core wires in the middle. Its insulating layer is golden polyamide film, which is called "gold film" abroad. The total thickness of the insulation layer is only 20 to 100 microns, but it can withstand several kilometers of pulse high voltage. Triple insulated wires are suitable for high frequency transformer windings of micro motor windings and miniaturized switching power supply in the field of advanced technology and national defense. Its advantages are high insulation strength (any two layers can withstand the safe voltage of AC3000V), no barrier layer is needed to ensure safe margin, and no insulating tape layer is used to winding between layers. The volume of the high frequency transformer winded with it can be reduced by half compared with that winded with enameled wire. An optimum design scheme of high frequency transformer is to use ordinary high strength enameled wire to winding primary and feedback stage, and triple insulated wire to winding secondary stage. In this way, the leakage inductance can be greatly reduced, and the volume of high frequency transformer can be reduced by 1/2 to 1/3.
3.2 Winding Arrangement

To reduce leakage inductance, windings should be arranged in concentric manner. As shown in Figure 2, secondary windings in Figure 2 (a) are made of triple insulated wires. In Fig. 2 (b), all enameled wires are wound. However, a safe margin should be set aside and a reinforced insulation layer should be added between the secondary winding and the feedback winding. For multi-output switching power supply, the secondary winding with the highest output power should be close to the primary winding to increase coupling and reduce magnetic leakage. When the number of secondary turns is very small, in order to increase the coupling with the primary, it is advisable to use multi-strand parallel winding to evenly distribute on the whole skeleton to increase the coverage area. If conditions permit, foil winding as secondary is also a good way to increase coupling.
In the process of switching power supply, the distributed capacitance of winding is charged and discharged repeatedly, and the energy on it is absorbed. Distributed capacitance not only reduces the efficiency of power supply, but also constitutes LC oscillator with distributed inductance of winding, which will produce ringing noise. The effect of distributed capacitance of primary winding is particularly significant. In order to reduce the distributed capacitance, the length of the conductor per turn should be reduced as much as possible, and the initial end of the primary winding should be connected with the drain pole, and a part of the primary winding should be used to shield and reduce the coupling degree of the adjacent windings.
4. Suppressing Audio Noise of High Frequency Transformer
4.1 Suppression of Audio Noise of High Frequency Transformer
The attraction between EE or EI cores of high frequency transformer can displace the two cores. The force of gravity or repulsion between winding currents can also offset the coil. In addition, mechanical vibration can lead to periodic deformation. All these factors will make the high frequency transformer produce audio noise when it works. The audio noise frequency of single-chip switching power supply under 10W is about 10kHz ~ 20kHz.
In order to prevent the relative displacement between magnetic cores, epoxy resin is usually used as binder to bond the three contact surfaces (including the central column) of two magnetic cores. But the effect of this rigid connection is not ideal. Because it can't minimize the audio noise, and there are too many adhesives, the magnetic core is easy to break when it is subjected to mechanical stress. Recently, a special Glassbeads cementing agent has been used abroad to bond ferrite cores such as EE and EI, and the effect is very good. The binder is a mixture of glass beads and adhesives in a ratio of 1:9. It can be cured when it is placed in a temperature environment above 100 C for one hour. Its function is similar to that of ball bearings. After curing, each core can still independently deform or displace in a small range, while the overall position remains unchanged, which has a restraining effect on deformation. The internal structure of high frequency transformer bonded with glass bead adhesive is shown in Fig. 3. This technology can reduce the audio noise by 5 dB.
4.2 Shielding of High Frequency Transformer
In order to prevent the leakage magnetic field of high frequency transformer from interfering with adjacent circuits, a copper sheet can be surrounded outside the transformer to form a shielding band as shown in Fig. 4. The shielding belt is equivalent to a short circuit ring, which can restrain the leakage magnetic field. The shielding belt should be connected to the ground.

The single-port PoE injectors provide a simple, economical, high-performance and intelligent way for Ethernet PoE power supply and data communication. It’s ideal choice for those who need the superior quality project because of its simple use, easy to install, superior performance and cost-effective.
It is necessary to develop environmental monitoring instruments suitable for China's national conditions. Relevant experts believe that environmental monitoring instruments suited to China's national conditions should be inexpensive, low maintenance costs, and can be used in harsh conditions. Meanwhile, it is easy to maintain and operate, intelligent and has strong anti-interference ability. Some monitoring instruments with high intelligence, high stability and high precision are also the development trend of environmental protection instruments in China.

We should grasp the development trend of environmental monitoring instruments in China. Relevant experts believe that the development trend of environmental monitoring instruments in China is as follows:

1. At present, artificial sampling and laboratory analysis are the main direction of automation, intellectualization and network-based monitoring.
2. Develop from labor-intensive to technology-intensive.
3. From narrow field monitoring to omni-directional field monitoring.
4. From simple ground environmental monitoring to remote sensing environmental monitoring.
5. Environmental monitoring instruments will develop towards high quality, multi-function, integration, automation, systematization and intellectualization.
6. Environmental monitoring instruments are developing to the high-tech fields of integrated application of physics, chemistry, biology, electronics and optics.

We will increase scientific research investment in monitoring technologies urgently needed for environmental protection, and include the development of environmental monitoring technologies in key areas of environmental research. With the help of various supporting policies of the state, the industrialization and technological upgrading of environmental monitoring instruments will be promoted. At the same time, we will promote the integration of scientific research and production of monitoring instruments, encourage environmental monitoring instrument manufacturers, universities and scientific research institutions to adopt various ways to carry out technical cooperation, and accelerate the transformation of environmental monitoring technology achievements.

By means of market regulation and control, we will promote the recombination of environmental monitoring instrument production enterprises, and gradually change the situation of weak production technology, decentralized investment, low level repetition and low market competitiveness of monitoring instruments, so as to achieve moderate scale and intensive production, and form a number of key enterprises of monitoring instrument production. At the same time, the products should be adjusted from middle and low-grade to high-grade instruments and equipment to meet the needs of practical work.

With the help of high-tech reorganization, transformation and upgrading of the technical level and competitiveness of the environmental monitoring technology and instrumentation industry, the process of localization will be accelerated. It should be promoted to adopt the domestically-made monitoring equipment and equipment in the case of similar technical level. With the improvement of the technical level, the price of domestically produced instruments and equipment should be appropriately increased, and the profit margin will be increased to enable enterprises to have sufficient funds to improve the manufacturing level. For foreign countries with advanced sets of technology monitoring equipment, encourage the introduction, digestion, absorption of key foreign technologies, joint venture production, and then gradually achieve localization.

By increasing supervision and management of environmental monitoring instruments, we will establish and improve the marketization mechanism and qualification certification system for environmental automatic monitoring systems to eliminate the negative impact of operational market chaos. In addition, the development planning and technical policies of environmental monitoring instruments should be improved in a timely manner, the development direction of environmental monitoring instruments should be clarified, and the healthy development of environmental monitoring instruments should be guided and regulated to avoid blind obedience. What’s more, it is necessary to establish a group of technical intermediaries with good technical foundation and authority to test the technical level and quality of environmental monitoring instruments and make them known to the public. Implement an “access” system for environmental monitoring special instruments used for law enforcement monitoring.

To ensure the scientific, accurate and comparable environmental monitoring data, the development of environmental monitoring instrument standards should be strengthened, the environmental monitoring instrument standards should be incorporated into the environmental protection standard system, and the planning and coordination of environmental monitoring norms, environmental analysis and testing methods should be unified.

It is necessary to speed up the formulation of corresponding regulations for environmental monitoring work, and gradually establish regional automated network systems for environmental quality and pollution source monitoring in some large and medium-sized cities. By organizing the implementation of the demonstration project of environmental monitoring automation network construction, and then driving the formation of China's automated environmental monitoring network system, thereby expanding the market demand for environmental monitoring instruments and equipment.

Welcome to Fining, a professional poe products, for more high-quality poe products, power adapter and led power supply.
The single-port PoE injectors provide a simple, economical, high-performance and intelligent way for Ethernet PoE power supply and data communication.

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Latest News
Suggestions for the Development of Power Environmental Monitoring Instrument Industry
It is necessary to develop environmental monitoring instruments suitable for China's national conditions. Relevant experts believe that environmental monitoring instruments suited to China's national ... Read More
Key Design Points of High Frequency Transformer for Switching Power Supply
1.PrefaceMonolithic switching power supply integrated circuit has the advantages of high integration, high cost performance, the simplest peripheral circuit and the best performance index. It can form... Read More
Current Situation of Power Environmental Monitoring Instrument Industry
At present, the variety, quantity, performance and quality of environmental monitoring equipment in China are far from meeting the needs of practical work. Most of the monitoring stations in China hav... Read More
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