AC/DC Led Driver CE RoHS 5V 50A 250 Watt

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 5 Piece pc

Supply Capability:: 20000 Pieces per Day pc/month

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Output Power	201 - 300W
Output Type	Single
Input Voltage	110 or 220VAC
Output Voltage	3~48V
Output Frequency	50/60Hz
Output Current	5~83.3A
Certification	CE ROSH
material	Aluminium

Detailed Product Description

Good quality with good price

Built-in EMI filter

Low output ripple noise

Protection:Over load.Over Voltage.short circuit

Features

1.Low price and high reliability

2.Built-in EMI filter

3.Low output ripple noise

4.2:1 wide input range

5.Protectio cirns Over load.short circuit

6.1500VDC I/O isolation

7.DC adjustment range,less than 10% rated output voltage

8.Line regulation (full load)>0.5%

9.Output over load protection 1055~150% hiccup mode.auto-recovery

Q:What is off-line switching power supply: Switching power supply isolated, non-isolated two, where the "isolation", "non-isolated" are in terms of the grid. Isolated switching power supply, also known as off-line (off-line) switching power supply, which belongs to AC / DC converter, which is characterized by high-frequency transformer and optocoupler feedback circuit to achieve the isolation of the output voltage and the grid, the switching power supply Specified safety regulations. Isolated switching power supply is safe, but the circuit is complex, the cost is higher; non-isolated switching power supply circuit is simple, but the security is poor. Should be based on the design of the use of switching power supply and safety norms to choose. For example, according to the relevant standards, some white goods (such as home air conditioners, dishwashers, rice cookers, refrigerators, household electric heaters, etc.) internal control power, allowing the use of non-isolated switching power supply to reduce costs, The provisions prohibit the user to repair, so to avoid the occurrence of security incidents.

Q:What is the impact of the refrigerator on the refrigerator?: You made a serious mistake, the refrigerator should not be frequent switching machine. When the refrigerator is in operation, the refrigerant in the pipeline is running, the pressure inside the pipeline is very large, the compressor motor current is also large, if the power is turned off at this time and immediately start the refrigerator, the pipeline cooling The pressure has not been released, will cause the compressor to start difficult or even burn the compressor. If the refrigerator is to be restarted after power failure, it must be 3-5 minutes apart. I

Q:In the design of switching power supply, the input power is smaller, switching transformer primary side of the inductance but the greater the? Transformer primary side of the greater the amount of inductance, the transformer is not the volume will increase?: DC "can have a different meaning, and if the voltage through the resistor does not produce a voltage drop through the resistor voltage drop is called" DC "voltage, then the DC refers to a constant voltage that does not change with time, or from the Fourier decomposition Is the DC component of the periodic signal (the DC component is equal to the mean in one cycle when the input is a periodic signal and the circuit has a periodic steady state). High frequency "DC voltage" is clearly not a constant voltage, it is estimated that the PWM thing, if it is a cycle input, then it will not only contain the DC component, but also contains the various sinusoidal AC component. Among them, the DC component in the inductor there is no pressure drop, and its components in the inductor voltage drop, so the coil inductance is certainly not short circuit. Of course, if the input signal DC component is too large, sinusoidal AC component is too small, then it may be too small inductance voltage, the entire coil current is too large. The above is the meaning of DC from the perspective of frequency domain analysis. Of course, if you avoid the concept of DC directly to the time domain analysis, that is, on the first floor zchy4610 analysis, high level charge, the current index rises, low level discharge, current index decreased, in any case, the peak current and average current are not The voltage is only added to the resistor so much.

Q:Power supply to the Mori Chong 86N power supply 24-70 volts At present, the use of a 350-watt 50V switching power supply, the maximum current of 7.3 Motor dial selection current 6.3A, short-term operation, heat is not large At this point the switching power supply fan does not turn - is not long-term operation or power to increase the heat when the fan will start? Or are the fans running anyway? So that is the switch power supply cooling fan is broken?: Three words, that is, automatic temperature control, to the temperature to a certain extent will turn

Q:What are the main components of the switching power supply?: In which the transformer part has an auxiliary winding through the IC current voltage sampling to control the duty cycle of the switch to adjust the output current.

Q:Ming Wei switching power supply is why use?Ming Wei switch what to use, I see he is a circuit board, five wiring of the mouth, he used in the equipment what is the use? What is his general effect on the equipment?: AC variable DC, high voltage to low voltage for the equipment circuit to do power use.

Q:We use the switching power supply is 220v-48v, the room has air conditioning, air conditioning power in 6kw or so, the total power of this room in 17kw, DC current is 60A, the room has two tubes. Now do not know how much switching power supply losses, these devices may have 17kw power? This is the 17kw power meter on the show. Who heroes help me.: Need to know the switching power supply load current or load power and switching power supply efficiency. General switching power supply efficiency (220v-48v) is greater than 80%, 80% efficiency, its power consumption is equal to the load / 80%. Glossary: Switching power supply is the use of modern power electronics technology to control the switch on and off the time ratio, to maintain a stable output voltage of a power supply, switching power supply generally by the pulse width modulation (PWM) control IC and MOSFET composition. With the power electronics technology development and innovation, making switching power supply technology is constantly innovating. At present, the switching power supply to small, lightweight and efficient features are widely used almost all of the electronic equipment, electronic information industry is the rapid development of an indispensable power supply. With the rapid development of power electronics technology, power electronic equipment and people's work and life increasingly close relationship, and electronic equipment are inseparable from the reliable power supply, into the 80's computer power to fully realize the switching power supply, the first to complete the computer Power supply, into the 90's switching power supply have entered a variety of electronic, electrical equipment, program-controlled switches, communications, electronic testing equipment, power supply, control equipment, power supplies have been widely used switching power supply, but also promote the rapid development of switching power supply technology

Q:Switching power supply transformer core how to choose?: 1, according to the power to select the core size, combined with the layout of the whole board to select the core shape, according to environmental factors, switching frequency selection core material, according to the feasibility of core procurement, raw material costs to choose, consider the transformer processing technology Requirements, select the skeleton core shape, the output power of the size of the core material is mainly to see the size of the cross-sectional area of ??the core, the number of windings and the number of windings and so the main look at the size of the window area of ??the core material, in fact, Its best application. That is, when you choose to use, Yang long, to avoid its short, so that better design, select the core material, the first to determine the basic parameters of its core material, that is, according to your specific use Environment to choose whether the PC40 or PC50;

Q:I am now learning switching power supply, read some of the information in the "work in the CCM state of the flyback power", because of this do not understand, would like to ask the power of friends can give to explain, very grateful! As well as the principle of positive and reactive work mode? And tell me what I want to learn switching power supply only little knowledge of what I now learn from?: CCM is a continuous current type, one of which is the average current type, the switching frequency of the switch is fixed, the period T is constant, and the duty ratio changes with the change of the input direct pressure. The current of the inductor is not zero at any time in the half cycle of the AC supply line voltage, but is followed by the change path of the voltage. The average current is sinusoidal and is connected to the AC input voltage. CCM due to changes in the current range is small, compared to a smaller core loss. Compared to DCM. CCM mode circuit is relatively complex, and because the switch is not turned on when the inductor current is zero, the diode reverse recovery current will have a lot of switching stress, loss can not be ignored, so the need to use a higher price fast reverse recovery diode To reduce the loss.

Q:Switching power supply, what is the difference between the charger: 2, the switching power supply is a form of power conversion, the characteristics of the power supply is working in the switch state.As the switching power supply efficiency, so it has been a very wide range of applications. Charger is usually 220V AC power supply into the appropriate DC voltage, Charger can be used to make the charger, but he also used in color TV, VCD and other occasions, with one of the following one. The charger can be used to make the charger, but he also used in color TV, VCD and other occasions, with the following one Simple diagram to express the relationship between the two:

Nowadays, our products are exported to numerous countres, like US, Australia, UK, etc. Successful improvements on technical processes and professional customer services have been recognized by more and more new or old customers. We hardly receive any negative feedback from customers. Our products so far have catched up with the consistency with world standard .

1. Manufacturer Overview
Location	Zhejiang,China (Mainland)
Year Established	2011
Annual Output Value	Below US$1 Million
Main Markets	Southern Europe 4.57% Domestic Market 28.13% North America 22.50% South America 12.31% Eastern Europe 1.76% Southeast Asia 9.85% Oceania 0.28% Mid East 9.00% Eastern Asia 0.84% Western Europe 8.65% Northern Europe 2.11%
Company Certifications	gistration of a foreign trade operator; BUSINESS LICENSE; Custom Import & Export licence

2. Manufacturer Certificates
a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port	Oakland,Buenos aires,BOGOTA
Export Percentage	51% - 60%
No.of Employees in Trade Department	3-5 People
Language Spoken:	English, Chinese
b)Factory Information
Factory Size:	1,000-3,000 square meters
No. of Production Lines	5
Contract Manufacturing	OEM Service Offered Design Service Offered
Product Price Range	Average