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: How to identify the computer motherboard and switching power supply, restart, hard disk plug: 2, HDD LED is the hard disk indicator, the general is the vertical look, + there is a positive side, - or not sign there is a negative side, the chassis is also reserved for such a plug, corresponding to insert the corresponding board can be set The HDD LED lights feet can not be inserted, plug the indicator light is not bright.

Q: What is the relationship between the output voltage of the switching power supply and the PWM signal?: First of all, what is your circuit topology? Is BUCK, or isolated rebirth is it? Different circuits, the answer to your question is different. However, a large range can be explained as such. The larger the PWM duty cycle, the stronger the output load. (That is, the output voltage * the greater the output current.) You better, or look for the corresponding topology of your circuit information, find the formula, so good to understand some.

Q: Switching power supply (AC-DC) use notes and tips: ??Fourth, in order to achieve full heat effect, generally installed in the air convection conditions good position or installed in the chassis shell through the shell will heat out. ??5, LED switching power supply factory before the addition of resistive load, if used in capacitive or emotional load, should be preceded by the order to explain ??Sixth, for the dual output symmetrical load, the preferred use of symmetrical output power ??Seven, the power supply FG ungrounded users, hand touch the shell or the output of Ma electrical feeling is a normal phenomenon, floating when the FG on the earth about 110V AC output, which is the power of the internal structure of the decision.

Q: Name and function of the components of the switching power supply T1, T2, R11, R12, D6, C2, Q1, D5, U1, U6,: This is a single-ended flyback switching power supply circuit, in this switching power supply, T2 is a high-frequency transformer, the role of voltage conversion, R11 is the starting resistance of U1, the input voltage of 85 - 2-265 AC, the choice should be in the 1--2W, 150 - 330K resistance between, usually need to use multiple resistors in series, otherwise it is easy to damage. R12 is the current limiting resistor of the switch, but also U1 overcurrent current detection resistor, the output short circuit when the voltage drop on the resistor will become high, U1 protection to stop the output drive signal. D6 is the transformer provided to the U1 supply voltage rectifier. C2 is the main filter capacitor, usually with electrolytic capacitors, voltage is greater than the maximum voltage input of 1/3, the capacity of about 1W / micro-law output. Q1 is the FET, is the switch tube. Generally also mos. D5 and R7, C5 are connected to the transformer primary to form the transformer spike voltage absorption circuit. When the switch is turned off, the moment the transformer will have a very high induced voltage generated, this circuit can be absorbed by this spike voltage (or is limited to a safe Of the range). Also called DRC or RCD spike voltage absorption circuit. U1 is the switch tube drive circuit, here should be a PWM integrated circuit, also known as pulse width modulation, is the English "Pulse Width Modulation" abbreviation, referred to as pulse width modulation. U6 is a photocoupler,

Q: What brand of switching power supply cost-effective?: Sanmim with a few years, with the search on the very good

Q: Hello everyone, I have a switching power supply chip with UC3845, fault: turn on the power instantaneous power indicator light and then off. After the investigation did not find a short circuit phenomenon. When the shortcomings of several consecutive shortcuts on the receiving side of the two pins, the power can be activated. What is the reason for this? thank you all!: Oh, the above two answers I think can not help you solve the problem, because it is not feasible. First of all, according to what you say, you can accurately judge, you are full or overloaded when the normal start. This only shows a reason that the power is instantly activated when the impact is protected. The solution to the problem is to analyze the cause of the problem first. Where the protection is due to power on the moment when the load with the impact of over-current. So the overcurrent protection value should be slightly adjustable to solve. Such as single-ended flyback power supply, can reduce the resistance of the lower end of the MOS tube in order to increase the output over-current protection value, half-bridge or full-bridge circuit, then appropriate to reduce the peak current protection value or output over-current protection value, solved. Many of the output overcurrent or short circuit protection is used in the transformer primary side using the transformer (magnetic or magnetic core) to detect the transformer primary current, to protect the output overload situation. The value of this detected can be appropriately adjusted (the voltage drop resistance value can be appropriately reduced).

Q: What are the main components of the switching power supply?: The main component of the switching power supply is the electronic switch (FET or transistor). First, the input must be protected (fuse) filter (capacitor) in the rectifier (rectifier bridge) and then need DC / AC conversion (transformer) rectified output (rectifier diode) and then filtered (inductive capacitance) and finally a stable output.

Q: I bought a 3C certification 12V 500mA power adapter, I use 15 ohm 5W resistance to measure the voltage (12V, current 800mA) supposedly the specification is 500mA, more than 600mA should be protected, but why will show 800mA The The In addition, I use 10 ohm resistance to measure it to protect, is not the way I measured is not so measured? Or is this power adapter not 12V 500mA specification but 12V 1A? The The Solve? The Seek test method The: Some set 1.2 times, 1.5 times, there are 2 times. The reason is to prevent the instantaneous impact of the current so that the power supply malfunction.

Q: Switching power supply maintenance methods can be divided into several steps: 5, when the filter capacitor no 380VDC voltage, indicating that the PFC circuit is not working properly, PFC module key detection pin for the power input pin VC, start the foot Vstart / control, CT and RT feet and V0 feet. When repairing a Fuji 3000 camera, test an on-board filter capacitor without 380VDC voltage. VC, Vstart / control, CT and RT waveforms and V0 waveforms are normal, measuring field effect power switch G very no V0 waveform, because FA5331 (PFC) for the patch components, the machine appears after a long time between the V0 and the board between the virtual Welding, V0 signal is not sent to the field effect transistor G pole. The V0 end with the board solder joint welding, with a multimeter to measure the filter capacitor has 380VDC voltage. When the Vstart / control side is low, PFC can not work, you have to check the end of the connection with the external circuit. In short, the switching power supply circuit is easy and difficult, the power is very small, the output voltage varied. As long as the core of things to grasp, that is fully familiar with the basic structure of the switching power supply and the characteristics of PFC and PWM modules, the basic conditions of their work, in accordance with the above steps and methods, multi-hands maintenance of switching power supply, you can quickly remove the switch Power failure, to achieve a multiplier effect.

Q: I do 12V2A switching power supply when the 2A load, under normal circumstances work is normal. But is the beginning of the load that moment, when adding more than 1.3A, the output voltage dropped first low and then quickly returned to normal, what reason? This is of course not normal, the same load, for someone else's power but not the problem. How should we solve this problem? Just test a phenomenon is that when the sudden removal of the load when the voltage is also the first drop and then return to normal state. How to solve it?: Before the load, the current is not large, switch on and off time ratio is to meet the capacitor charge, discharge balance, to maintain the output voltage unchanged. When the load is connected, the load is mainly from the capacitor, the capacitor discharge quickly, the voltage drop is very low, the switch has not adjusted conduction and turn-off time than the capacitance of the charge and discharge balance, this adjustment is gradually It takes time. So the output voltage, that is, the voltage on the capacitor, the first rise after the rise.

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