Switching Power Supply CE RoHS 5V 3A 15 Watt

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 5 Piece pc

Supply Capability:: 30000 Pieces per Day pc/month

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Output Power	1 - 50W
Output Type	Single
Input Voltage	110 or 220
Output Voltage	3~48V
Output Frequency	50/60Hz
Output Current	0.3~5A
Certification	CE ROSH
material	Aluminium

Good quality with good price

2 years' quality warranty

Low output ripple noise

Protect:Over load.Over Voltage.short circuit

Features

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

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: I do not understand the transformer should only work in the alternating voltage, but the switching power supply to the PWM IC output terminal connected to the primary input PWM IC has been rectified filter DC. Is the PWM modulation obtained by the high frequency of the exchange?: The transformer in the switching power supply is basically the same as that of a conventional power transformer, except that it has a feedback winding that provides a positive feedback signal to the PWM IC to cause high frequency oscillation along with the primary winding, Winding DC with a large AC component, the high-frequency AC components through the transformer core isolation in the secondary form of a pure high-frequency AC, rectifier filter after the supply of electrical equipment. Because the frequency is very high, compared to ordinary power frequency, switching power supply in the transformer and filter capacitor are greatly reduced.

Q: What is a linear adapter and a switching power adapter: . Linear power supply efficiency is low, and switching power supply efficiency is higher. But the linear power supply EMI is low, and the switching power supply EMI is higher, especially the low power. So the use of different!

Q: Switching power supply gnd is doing: Circuit diagram and the circuit board on the GND (Ground) on behalf of the ground or line 0. GND is the meaning of the common, it can be said to be, but this is not a true sense of the ground.

Q: Now I want to buy a larger power test power, about 1KW. I have no money, so I want to buy a switching power supply, so that you can save a lot of money, but do not know can not accept the emotional load: If the switching power supply output DC, emotional / capacitive are not afraid. Direct current does not exist.

Q: Switching power supply, starting resistor is very hot, no output. What is the reason.: That is, switching power supply can not afford to vibrate, if it is self-oscillation to check the rectifier components are not short-circuit, positive feedback circuit is not normal.

Q: Switching power supply efficiency: if the output current 2 / 10v, when the diode conduction voltage is 0.7v, the loss of 0.7 * 2 = 1.4W, transformer output (10 + 0.7) * 2 = 21.4 watts, available power of 20 watts, efficiency of about 90%; ?? Note: Only the output loss is calculated, excluding the transformer and other losses.

Q: What is the meaning of the magnetic ring color in the switching power supply?: Switching power supply used in the magnetic ring generally there are two, one is the high permeability of the green ring, used in the input and output. The color is green. Do common mode inductance use. One is power type. If it is black or blue, is generally iron silicon aluminum. If it is blue-green material is -52 core powder. If it is yellow and white is -26 material iron core, do energy storage inductors use. There are some more special applications are transformers. Drive transformer magnetic ring. Magnetic beads, dc head filter magnetic ring. Division I is a professional transformer. There is not clear you can talk to me.

Q: What is offline LED driver? Offline switching power supply: Off-line switching power supply, also known as isolated switching power supply, is an AC-DC converter circuit. AC and DC are isolated by transformer.

Q: Switching power supply, Fairchild Semiconductor's switching power supply chip data, the application of the chip design switching power supply can be divided into two categories: Adapter and Open Frame, and the general application of the former Adapter mode design power than the latter will be large The What kind of structure or type, what is the difference between the two?: Switching power supply of the actual, 24V, etc.), if the PC power is generally a metal shell, with a semiconductor power device as a switch, input AC220V, Through the high-frequency transformer coupled to the secondary, is the high-frequency transformer. AC220V switching power supply refers to the input is AC220 volts, a power mode into another form of the main circuit called the switch converter circuit; change with automatic control closed-loop stable output and protection is called switching power supply. But also at any time to check the current power supply equipment, generally from the insulation effect. Through the switch tube and shock circuit, such as electronic rectifier with the 13001--13007 series, the basic principle of switching power supply is: the 220v 50HZ exchange,

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