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

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 5 Piece pc

Supply Capability:: 3000 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	0.5A~8.3A
Certification	CE ROSH
material	Aluminium

Switching power supply CE ROHS

Built-in EMI filter

Low output ripple noise

Protection:Over load.Over Voltage.short circuit.

Features

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

Q: How to solve the switching power supply MOS tube and transformer temperature rise is too high: Switching power supply in the main components of the semiconductor switch tube, power diodes, high-frequency transformers, filter inductors and so on. Different devices have different methods of controlling calorific value. Power tube is a high-frequency switching power supply in one of the larger heat, reduce its heat, not only can improve the reliability of the power tube, and can improve the reliability of switching power supply, improve the average time between failures (MTBF)

Q: A DC / DC switching power supply input with UC3843 is a 24V power supply between two power supplies is up to 200M line now the situation is DC / DC power supply at no time when the load is measured at this time DC / DC power input It is actually less than 15V if the DC / DC power supply is loaded with about 10W and the 24V power supply output is adjusted to 27V or more when the DC / DC power supply is working In front of the wrong In the load when the 10W when the front power output is adjusted to 27V measured when the power input voltage is 14.5V or so when the no-load time is normal add another point With 10W when the front of the power output is adjusted to 27V below the two power between the current is significantly increased at this time into the DC / DC power supply voltage from 15V down to 6,7V looks more like the back of the power from Excited and DC / DC of this power supply in the 9V or so input conditions can work properly: There are three problems need to be identified, 1 is the power output power in front of how much, if small, can not be changed, only for the front of the power; 2 is 200 meters diameter, if too thin, a little current Will produce a lot of pressure drop

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?: 1, the principle of transformer work is: through the PWM (pulse width modulation) control switch, the rectified DC voltage for high-frequency switch conduction, making high-frequency current into the switching power supply of the high-frequency transformer primary side, which is the transformer vice Side induced current, after rectification can be obtained after the required voltage or multiple voltage.

Q: What is the traditional way to convert alternating current to DC? What is the machine doing this function? Now with the general switching power supply What is the difference and what benefits compared to the traditional switch of this DC will be the machine?: Conventionally, the method of alternating current for alternating current is rectified, and the machine that performs this function is called a rectifier. Now the general switching power supply is only used to complete the rectification, at a higher frequency of the inverter, and then rectify the process. Compared with the traditional rectifier circuit, its benefits are small size, light weight, high conversion efficiency, power quality and stability.

Q: What is the core of switching power supply design?: The design core is of course switch and switch transformers

Q: I made a switching power supply, using boost dc-dc transform, input 18V, output 30-36V variable. Found that the output voltage has 300mv ripple and 1V burr. Has been added 10mh inductance and 6600uf capacitor filter. Switch tube plus RCD buffer Output with choke and EMI filter,: Output in series with an inductor and then a capacitor in parallel LC filter circuit try to see if feasible?

Q: The voltage is too low to refer to the INPUT voltage range below the switching power supply: In general, the input voltage is low, if the output can meet your requirements, there is no big problem. because: The input voltage is low, in the same output power, the input line current will increase, if the margin is not enough, it will obviously heat. If the investigation is reasonable and mature switching power supply program, the input voltage is low, or leave enough margin, or limit the output power, or even into the undervoltage protection state. In addition, the input voltage is low, the switching tube withstand voltage will be reduced, the failure rate will be reduced.

Q: 12V switching power supply measurement 13.7V normal?: Adjust it to 12V, the terminal next to the adjustment potentiometer

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