SMPS Switching Power Supply 12V 5A 60 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:: 30000 Pieces per Day pc/month

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Output Power	51 - 100W
Output Type	Single
Input Voltage	110 or 220
Output Voltage	3~48VDC
Output Frequency	50/60Hz
Output Current	1.25A-20A
Certification	CE ROSH
material	Aluminium

Good quality with good price

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: What is the basic principle of switching power supply?: The exchange through the diode rectifier. Capacitor filter into DC, and then through the 1620KHz high frequency oscillation generator. Switch and high frequency switching transformer role, the DC into the required amplitude of the high frequency pulse voltage. And finally through the high frequency of the two poles to the high frequency pulse voltage rectification. Capacitance filter output required DC voltage. The output regulator is to rely on the output to remove the sampling voltage to adjust the oscillator frequency and pulse duty cycle.

Q: "First AC into DC, and then into a higher frequency of alternating current through the high-frequency transformer voltage conversion" Why? "LED display as a high-precision instrument to select the switching power supply instead of the transformer" Why?: Transformer can change the voltage, and switching power supply is not a

Q: As shown below, I used a switch chip tny276pn, optocoupler pc817, regulator source tcl431 and some small components (capacitors, resistors, etc.) designed a 5Vdc switching power supply. Transformers are custom, according to the flyback type, 132kHz, 85 ~ 265Vac parameters to do. The upper right corner of the picture p2 end is a 20-30 ohm coil, and now found that the input voltage dropped to 20Vac, 5Vdc was unstable, coil control of the magnet was to jump, I would like to 20Vac this parameter increased to 60 ~ 80Vac, So that the coil control of the magnet in the low voltage when the high jump, how should modify the circuit? Thank you.: Always do not see the picture in the know. However, from the description point of view, this problem needs to change the way of thinking. It is contradictory to detect the voltage at the input of the power supply in a power supply output circuit with a regulated function. In 20Vac was stable output, it is to ensure that the power supply in the 60 ~ 80Vac can work properly, should be the design margin, when the power load increases, the lower limit voltage will rise. Further, the lower limit to the present 20Vac, but also take into account the factors of load changes. In short, this is not a bad thing, no need to change the design to improve it, improve the possible impact of reliability. The AC voltage should be measured at the input of the power supply, ie, the high voltage side. As the precision is not high, you can add a simple test circuit on the high side, such as with a 60V regulator in series with a light lotus (LED side, of course, have a current limiting resistor), the other side of the lotus ) There is an accurate action signal, with a S8050 transistor connected to the 5Vdc power control solenoid can be a. In the electromagnet action, 5Vdc or stable, which can ensure the reliability of the operation of the electromagnet, will not produce jitter. Thought is important, the circuit is very simple, not on the map, and recently know the map often shows no time, occasionally to see.

Q: Drawings indicate DC-DC switching power supply can be replaced with AC-DC switching power a?: DC input switching power supply and AC input switching power supply is not interchangeable. But if you have the knowledge of this circuit, after the transformation of the circuit can be interchangeable. Principle: AC input switching power supply, the AC input rectified filter voltage and DC input switching power supply DC input voltage of the same.

Q: 24v switching power supply can do car battery charger?: Due to the battery resistance is very low, increase the power output voltage, charging will lead to excessive charging current, the power switch tube will be burned due to excessive current, it can not use the computer switching power supply to the car battery

Q: Switching power supply life is generally how long?: Now the earliest imported color TV has been more than 20 years, individual families have used to prove that switching power at least in more than 20 years. Of course, quality is not qualified in this column.

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: Direction switching power supply: Modularity is the overall trend of switching power supply development, modular power can be used to form a distributed power system, can be designed as N + 1 redundant power supply system, and to achieve parallel capacity expansion. For the switching power supply operation noise this shortcomings, if the pursuit of high frequency of its noise will also increase with the use of part of the resonant conversion circuit technology, in theory, can achieve high frequency and can reduce noise, but some The practical application of resonant conversion technology still has technical problems, so it is still necessary to carry out a lot of work in this field, so that the technology can be practical. Power electronics technology innovation, so that the switching power supply industry has a broad development prospects. To speed up the development of China's switching power supply industry, we must take the road of technological innovation, out of the Chinese characteristics of the joint development of production and research, for the rapid development of China's national economy to contribute.

Q: What is the definition of the maximum discharge current, battery backup time, and discharge time? Always confused, when the calculation is always wrong ... ...: What is your battery capacity and how much you become a high voltage There is also an accurate calculation of the discharge current of the battery and the attenuation of the discharge

Q: Today encountered a switching power supply, independent of the 220v into, 12v out, after opening and ka3842 see the sixth foot of a resistor and a diode at the obvious phenomenon of burning, I measured with a multimeter has 300v, but a flash Flash After the resistance, the low pressure at a light is flash, no output,: Switching power supply 220V input rectifier is connected before the insurance resistance, then the insurance resistance may be bad, measured DC 300V is not measured, the direct measurement of the resistance, the general 0.22 --- 2 European high is not normal, 3842 and optocoupler, switch tube may also be bad

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