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

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5 Piece pc
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20000 Pieces per Day pc/month

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Product Description:

Output Power

201 - 300W

Output Type


Input Voltage

110 or 220VAC

Output Voltage


Output Frequency


Output Current






Detailed Product Description

Good quality with good price

Built-in EMI filter

Low output ripple noise

Protection:Over load.Over Voltage.short circuit



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

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Q:Why switching power supply with two series capacitor filter, with a can you
Two series to increase the pressure, improve the reliability of the power supply.
Q:How the phase margin and gain margin of the switching power supply are measured
1. Requires a dedicated spectrum analyzer. The instrument (such as the Fluke Spectrum Analyzer, HP, etc.) can automatically scan the BODE of the measured power supply.
Q:Switching power supply output 12V 10A how to use the transformer how much ah
Switching power supply does not need the front side of the transformer ah, in our country, 100V - 260V, 50 / 60HZ under normal use. Do not repeat the mistake again. {Single-phase electric power = voltage × current × power factor that is P = U × I × cos ¢}, and the voltage multiplied by the current that is the power factor cos ¢ = .1 case, only for pure resistance circuit. The switching power supply circuit is an inductive load, and the inductive and capacitive loads have a power factor
Q:How to choose the switching power supply frequency?
Since I do not have power, the following is only a personal view Internal: 1: depends on your topology and power level 2: the choice of IC and switch operating frequency and can withstand the thermal upper limit external: 3: circuit other power device frequency range 4: assigned to the various devices Limit the temperature is acceptable, in terms of volume, efficiency, cost, heat, system stability, etc., the parties weigh the next value, then the frequency of the better the common frequency as small, the corresponding magnetic device volume will be relatively large, and Frequency is large, the device is small, but the switch loss, of course, core loss is also large, unacceptable. If there are problems please go to the big bit forum to ask me, if you help the busy also hope to adopt the answer!
Q:How is the switching power supply fixed?
Emergency repair method can be sticky with glue stick, bare part wrapped with green shell paper fixed.
Q:Output 12V2A switching power supply, I would like to change to 12V5A, is not the transformer changed on the line
Of course, the first high-frequency transformer to be changed, high-voltage rectifier filter electrolytic capacitor to increase, U1 may be changed to mosfet, low-voltage output high-speed rectifier diodes and output electrolytic capacitors have to change, there are other ........ ....and many more! Change to do the test can be changed to use is not recommended to buy an ordinary 12v5A power supply should not be too expensive.
Q:Touch switch failure when switching power supply
Plus 4700 microfarads and 104.103.10p capacitors at the output and the input of your control circuit board In the touch of the power input side of the string into a 10 ohm or so resistance, put a 220 micro capacitor before the capacitor, put two 104.103, but also the resistance into inductance.
Q:How does switching power supply eliminate ripples and burrs?
You said the burr is the overshoot Your inductance is not wrong? 10mH too big? Will it be 10uH wrong? In the out there, the overshoot is sure to exist, but this should be gone in the capacitor This has a lot to do with your measurement 1. Must be in the capacitance of the positive or the amount of load above, do not in the amount of inductance, there is no capacitance 2. With the oscilloscope, the ground connection will have a great impact on the measurement results you can move their own line of the line to see the extent of the test will certainly move The probe on the ground to try to short, the measurement results are correct The above two points to do, the measurement results should not be so big And to be honest, for the 30V output, there are 1V "glitches" that should be acceptable You can check the specifications of other switching power supply, this one usually 5%, 30V * 5% = 1.5V, 1V should be acceptable
Q:How to change the switching power supply voltage?
Replace the output transformer can be, but must be the same with the resistance value should be no problem! 11
Q:Switching power supply 10A current, relay 5A current will not burn the relay
Switching Power Supply 10A Current is the ability of the switching power supply to provide current, the relay 5A current is allowed to flow through the relay contacts the maximum current. If the load current does not exceed 5A (to keep the safety factor), it will not burn.
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

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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