Single Output Switching Power Supply with PFC - 1U 480 Watt

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 1 Piece pc

Supply Capability:: 200,000 Pieces per Day pc/month

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Output Power: 401 - 500W
Output Type: Single
Input Voltage: 85 - 264VAC
Output Voltage: 3.3 - 48V all available
Output Current: 11 - 85A all available
Dimensions: 278 x 127 x 43(mm)

Specificatons

Universal input

PF>0.98@115VAC;>0.94@230VAC

All 105C capacitors

Japanese brand for key components

Built in fan cooling

Features

1) High reliability

2) Universal AC input/ full range

3) PF>0.98@115VAC; PF>0.94@230VAC

4) Protection: overload/ over voltage/ over temperature/ short circuit

5) Built in remote sense (optional)

6) Built in fan cooling

7) 5 years limited warranty

8) Dimensions: 278 x 127 x 43mm

Q: How to identify the computer motherboard and switching power supply, restart, hard disk plug: 3, PW LED is the power indicator, + is the positive, - or no sign there is the negative side, this can not be inserted, plug the power light is not bright. Similarly, Power sw is the power switch, also marked with positive and negative, but this is the plug is not a big relationship. Rest sw is to restart the pin, there are positive and negative, with the same as the Power sw, plug the anti-no relationship. Next to the English speech is a small speaker pin, usually dead feet and side by side.

Q: What is the component stress in the switching power supply?: Component stress, popular stresses that the components can withstand the maximum voltage, current, temperature and so on. Component stress testing is usually a destructive test. Do not know if you can understand.

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: The original circuit is in accordance with the 20K switching frequency design inductance, and now the switching frequency to 10K, do not know if this will be any problem? Inductance in the output of relatively large power, there will be buzzing sound, what is the reason?: Generally do not put the frequency of work can be heard on the frequency, that interference will be very painful!

Q: Is switching power not power? Why should the word "switch" be added?: Switching power supply its working principle is not the same, first of all it will be the main power through the rectifier into a DC with a fluctuation, coupled with the capacitor and other energy-saving front-end components, and then through the transistor (MOS tube) and other devices will be a DC Intermittent form added to the high-frequency transformer, the use of inductive induced current in the secondary level to produce the required current or power. ???????This is the power of a lot of advantages, one is the small size of light weight. Second, the same power cheap, the third is high efficiency, four is the output voltage stability, can allow the input voltage has a large fluctuations without affecting the output voltage. ??????Disadvantages are: manufacturing more complex, covered with more knowledge, electromagnetic interference is relatively large, high power on the power grid is relatively large.

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: Car cd with the battery all right, with a switching power supply speaker has a buzzing sound: Voltage big bar, it should be between 12 volts to 15 volts,

Q: What is off-line switching power supply: You can not take the power, with their own battery switching power supply

Q: Yesterday when the transformer to find a problem, a boost inductance, my air gap plus the greater the inductance of the smaller, but a counterattack transformer my air gap plus the more inductance but the greater, now a bit can not figure out.: Inductance: inductance, also known as self-inductance coefficient, is the inductance of the original sense of self-inductance of a physical quantity. When the magnetic flux through a coil changes, the coil will produce potential, which is the electromagnetic induction phenomenon. The resulting potential is called the induced electromotive force, the magnitude of the electromotive force is proportional to the velocity of the flux change and the number of turns of the coil. The basic unit of inductance is H (H), there are cents (mH), micro-Heng (uh). 1H = 10 ^ 3mH = 10 ^ 6uH The air gap is the gap between the motor stator and rotor. The stator does not turn, the rotor needs to turn, so the air gap is necessary, according to the different motor, air gap size is also different. In general, the asynchronous motor air gap is small, synchronous motor air gap. Energy storage mainly refers to the storage of electricity. Energy storage is a term in oil reservoirs that represent the ability of reservoirs to store oil and gas.

Q: Switching power supply OLP and OCP these two are the same concept?: OLP is overload protection, to prevent the main power lines due to overload caused by overheating protection and installation of overload protection equipment.

We have various advanced equipment, such as wave soldering and reflow soldering machine, RoHS testing, environmental testing system, etc. Only top international brand components are adopted for our key parts to ensure long lifetime and high reliability. Each unit is given full load burn-in test.

1. Manufacturer Overview

Location	Shanghai,China (Mainland)
Year Established	1995
Annual Output Value
Main Markets	North America 10% South America 3% Eastern Europe 5% Southeast Asia 8% Africa 2% Oceania 2% Mid East 1% Eastern Asia 2% Western Europe 15% Northern Europe 10% Southern Europe 1% South Asia 2% Domestic Market 39%
Company Certifications	CE/LVD Certificate; TUV Certificate; Hengfu Logo Registration Certificate; RoHS Certificate

2. Manufacturer Certificates

a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability

a) Trade Capacity
Nearest Port	Shanghai
Export Percentage	31% - 40%
No.of Employees in Trade Department
Language Spoken:	English, Chinese
b) Factory Information
Factory Size:	10,000-30,000 square meters
No. of Production Lines	Above 10
Contract Manufacturing	Design Service Offered Buyer Label Offered
Product Price Range