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:What is the PWM high-frequency switching power supply
PWM-type high-frequency switching power supply is the use of pulse width modulation (PWM), referred to as pulse width modulation, is the use of microprocessor digital output to control the analog circuit is a very effective technology, widely used in measurement, communication Power control and transformation in many areas of power. PWM switch regulator or steady current power supply basic working principle is in the input voltage changes, internal parameters change, external load changes in the case, the control circuit through the control signal and the difference between the reference signal closed-loop feedback, adjust the main circuit switching device Of the conduction pulse width, making the switching power supply output voltage or current control signal is stable.
Q:High frequency switching power supply is what the meaning of high frequency, what is the specific meaning?
High-frequency switching power supply has many advantages: 1, small size, light weight. Vintage 100 to tile electrical appliances, only the power part of the large power transformer has a few pounds of heavy, accounting for a large position of the chassis. While the switching power supply only a few hundred grams, a small piece of palm. 2, saving materials. The switching power supply saves a lot of copper and iron. 3, stable and reliable. Switching power supply has multiple protection measures, the traditional power supply is the basic fuse. 4, a wide range of voltage adjustment, easy to achieve a wide range of voltage adjustment, the traditional power can not be compared. 5, switching power supply energy efficiency is high. 6, switching power supply to eliminate the traditional power of nuisance 50 weeks of communication sound. Switching power supply has so many advantages, has been more and more widely used to gradually replace the traditional power supply.
Q:What is the relationship between the input power of the switching power supply and the primary side of the switching transformer?
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:Switching power supply carrying capacity how to test ??
The protection value of the switching power supply is not equal to the rated value, the general protection value is greater than the rated value.
Q:Why the computer to use switching power supply
Because this out of the voltage is more stable ah, do not you want your computer will be a bright one, and finally smoke ah!
Q:Neighborhoods! Control transformer and switching power supply of the difference, for occasions, advantages and disadvantages
In the industrial electrical equipment in the control transformer is the primary two-phase AC (AC380V) secondary output 220V or 36V, 24V, 12V AC power frequency transformer, mainly for the AC contactor and drive the use of small AC winding relays. Switching power supply is input AC220V output is required according to the different output DC voltage, in the industrial electrical equipment control circuit is mainly used for the control circuit and relay power supply. Switching power supply output voltage is stable but poor reliability, control transformer life is long but the output voltage by the power grid voltage, the two different principles of the use of different purposes can not be replaced, can not compare advantages and disadvantages.
Q:What is switching converter and switching power supply?
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. Switching power and linear power compared to the cost of both the output power increases with the growth, but the growth rate of the two different. Linear power costs at an output power point, but higher than the switching power supply, which is called the cost of reversal point.
Q:Will the switching power supply fake load how to calculate?
As for the choice of parameters, one is enough resistance power, the second is the resistance, which can make the output stability of the resistance in the small point on the line, too small will increase the no-load loss, affecting efficiency, too much to play a role.
Q:Switching power supply
A voltage is converted to another voltage, the crude pressure is converted to fine pressure
Q:Switching power supply CE certification is probably how much money
Switching power supply CE certification is not expensive, do a CE certification can be sent to the RoHS certification, the specific cost can provide product information to assess, package rectification, retest not charge, welcome to consult us CNAS laboratory, ID number is the phone, thank you!
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