Switching Power Supply CE RoHS 5V 3A 15 Watt

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Product Description:

Output Power

1 - 50W

Output Type


Input Voltage

110 or 220

Output Voltage


Output Frequency


Output Current






Good quality with good price

2 years' quality warranty

Low output ripple noise

Protect:Over load.Over Voltage.short circuit



1.Low price and high reliability

2.AC input power suitable for the world

3.High efficiency and low operation temperature

4.2 year warranty

5.100% full-load in test

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Q:Wireless communication room in the combination of switching power supply and integrated switching power supply and the difference between the respective functions?
The so-called combined switching power supply, there are a number of independent switching power supply through the switch with control cabinet control, according to the size of the load to the wireless communication equipment power supply, load can provide two or more switching power supply, Taiwan power supply. And the integration of the power he is a wireless communication equipment to form an integrated device, can only have the equipment to accompany the switching power supply. After the switching power supply is damaged, the communication equipment than to stop working, the combination of power can be changed for other power supply
Q:Car cd with the battery all right, with a switching power supply speaker has a buzzing sound
Voltage big bar, it should be between 12 volts to 15 volts,
Q:What is the difference between non-isolated flyback switching power supplies and isolated switched-mode power supplies.
This question can be divided into several phrases to distinguish: Non-isolated: The power input and output are electrically connected. As shown below: Turn left to turn right Turn left to turn right Isolated: The power input and output are independent of each other in the electrical structure and are connected only by transformers (magnetically coupled) and optocoupler (optocoupler) devices. Forward-pulse transformer phase / edge relationship, to ensure that the switch tube conduction, drive the primary transformer pulse transformer, while the transformer side of the load power supply. Turn left to turn right Flyback type: flyback circuit and the forward circuit is the opposite, the original transformer transformer / phase relationship, to ensure that when the switch is turned on, driving the pulse transformer primary side, the transformer side does not load the power supply, that is, Side staggered off. Turn left to turn right Switching power supply: 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 is generally composed of pulse width modulation (PWM) control IC and MOSFET.
Q:Switching power supply, starting resistance is very hot, no output
You ask the question is the common problem of switching power supply, you have to study the power schematic diagram! Practice basic skills.
Q:Why should the switching power supply feedback the winding power supply?
The chip needs a DC power supply to work. At the beginning of the boot, most of the power supply through a power resistor will be 300V DC high voltage step-down to provide to the chip. When the chip outputs multiple pulses, the feedback winding can provide normal power. Because in the normal work, the chip power consumption is also taught. Direct use of resistance buck, it is easy to lead to work instability. Therefore, it is the type of power supply feedback circuit to send the way to work.
Q:Monitor switching power supply is not a problem?
There may be insufficient power supply, you add a block power.
Q:What is the difference between switching power supplies and transformers?
Electronic transformer "can be simply understood as" simple without switching power supply regulator " Mainly used for some need high-power transformers, and the frequency, output voltage and other parameters are not strictly required, but the cost requirements are very sensitive occasions, such as lighting applications in the spotlight transformer. Spotlights are purely resistive loads that are insensitive to operating frequency but require very high power. Therefore, the use of traditional power frequency transformers is costly and wasteful of copper and iron, so the most suitable use of "electronic transformers" to solve this need. "Switching power supply" PWM technology can control the output power to accurately adjust the output voltage, the input voltage changes can ensure that the output voltage unchanged, and "electronic transformer" does not have this function! "Switching power supply" has a lot of advantages compared to traditional linear power supply. High cost (efficiency, efficiency, load regulation rate) Therefore, the application field is very extensive, such as computer TV mobile phone charger used in PC power are "switching power supply" Electronic transformer and switching power supply working principle is almost; Are through the electronic components will be converted into low voltage piezoelectric; The difference is: electronic transformer is the high-voltage power frequency conversion into low-voltage high-frequency electricity, only need to transform the lighting applications; The switching power supply can output a stable DC voltage according to the design.
Q:How to adjust the input voltage range of the flyback switching power supply
The maximum power of your power is 1.25W, the overall power supply power by 70% efficiency of 1.8W. In this case need to modify the transformer. To the place there are the following: 1, the transformer to increase the ratio; such as the original is 200: 5, now changed to 300: 5. Now want to do your request 60-80VAC input protection, you need the current transformer parameters to be calculated; 2, the transformer sensation increased; proposed to change to 4mH ~ 8mH. Once the two done, the protection voltage will rise.
Q:High power high frequency switching power supply with what rectifier
Rectifier switch with IGBT. This is very practical.
Q:Is switching power not power? Why should the word "switch" be added?
General power supply, such as 220V of the electricity plus a common transformer (power frequency transformer) coupled with the rectifier rectifier and capacitor filter has become an ordinary power supply. Early power supply are. Is such a. After the line with a linear regulator circuit has become a power supply. But this power supply on the input voltage requirements are higher, the larger the voltage input after the wave may not reach the adjustment effect , While the high pressure when the pressure drop in the adjustment device, the power efficiency is low.
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