Switch Power Supply 12V 2A 25 Watt with CE RoHS

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Product Description:

Output Power

1 - 50W

Output Type


Input Voltage

110 or 220

Output Voltage


Output Frequency


Output Current






Switching power supply CE ROHS

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 mode.auto-recovery

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Q:12V7A motorcycle battery can not use 14V3A switching power supply charge
Completely, the charging time is 3 hours. If the adjustment to 15 volts is also OK, the charging time is shortened.
Q:At present, switching power supply commonly used in high-power switch which?
Oh, you said the scope of some big. You use the circuit in different forms, switch the choice of very different.
Q:Switching power supply life is generally how long?
This issue asked a little wide, the life of switching power supply, if the quality of the power is not bad, and can be used normally, you can use for 15 years, some manufacturers warranty period is generally between 1 to 3 years,
Q:What is the flashing time in the switching power supply?
In order to avoid this spike voltage to make the controller malfunction of the IC will increase the time of about a few hundred nanoseconds, and this time the built-in current limit comparator will not work, Gate output drive will not be Shutdown.
Q:Is the DC input and AC input switching power supply available?
General low-power switching power supply input can be as low as 85VAC. Equivalent to 110DC, in the allowable voltage range should be possible.
Q:Explain several protection of switching power supply OCP; OLP; OVP; OTP; ESD; UVLO
ESD protection, ie electrostatic discharge, to avoid damage to the chip or electronic components due to static electricity; and low voltage shutdown (UVLO), undervoltage lockout, limiting minimum input voltage.
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:How to check the switching power supply leakage current
Insulation tester (pressure value) Vin to GND Vout to GND Vin tested against Vout separately Test the voltage transferred to your power corresponding to the standard on the line. You will see the leakage current in the insulation tester display value.
Q:Switching power supply control chip selection: UC3844, VIPER series, topswitch series. What is good?
No big difference, can be achieved, and the quality can also be designed to have no problem, in fact, you have to from the supply cycle, price and cost to consider, may wish to simply do the cost of three kinds of programs contrast
Q:Touch switch failure when switching power supply
This is obviously the switching power supply caused by high-frequency radiation interference program crash. I've done it before. That is often said that the electromagnetic compatibility issues. Market switching power supply in order to save the cost of most do not do EMI treatment, so the interference is very serious. You can buy that kind of high-end switching power supply effect will be better. If their own solution, it may not be able to solve, but can proceed from below. Can be in the switching power supply line plus CLC filter, that is, plus X capacitor and Y capacitor and common mode inductance. You can also increase the filter capacitor at the output and add multi-level LC filter, note that L is the kind of core inductance. There is also a key thing to deal with is the high-frequency transformer, you can use copper waves to wrap it up, reduce radiation, increase the shielding layer. In addition can switch the power supply as a whole sealed in a metal box can also play a very good shielding effect, reduce the radiation on the surrounding industrial computer and chip interference.
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  
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