Supply apparatus and power supply method

Abstract

The invention discloses a supply apparatus and a power supply method. The supply apparatus comprises a switching unit, a bleeder resistor, a filter, a rectifier, a power factor corrector, an output capacitor, a rectifying diode, a surge absorber element, a main power supply unit and a standby power supply unit, wherein when the switching unit is switched off, AC (alternating current) mains electricity is used for charging the output capacitor by the rectifying diode and the surge absorber element so as to supply for the standby power supply unit and then the standby power supply unit generates a standby power supply; and when the switching unit is switched on, the AC mains electricity is used for charging the output capacitor by the switching unit, the bleeder resistor, the filter, the rectifier and the power factor corrector so as to supply for the main power supply unit and then the main power supply unit generates a main power supply. The supply apparatus can restrain surge currents effectively, reduce the standby power consumption and meet the energy-saving requirement.

Description

technical field [0001] The invention relates to a power supply device and a power supply method, in particular to a power supply device and a power supply method capable of saving electricity when an electrical product is in standby. Background technique [0002] Generally speaking, a power supply device and a load are usually installed in an electrical product, wherein the power supply device converts the AC mains power into the power required by the load. However, this kind of power supply device is quite fragile, and it is very easy to be affected by instantaneous high voltage surges on the power, which will generate a large current and cause damage to the back-end load. Aiming at this phenomenon, the current solution is to use a surge absorbing element and a fuse to suppress the instantaneous surge voltage. Please refer to figure 1 . figure 1 It is a schematic block diagram of a conventional power supply device. [0003] The conventional power supply device 1 can wor...

AI Technical Summary

Problems solved by technology

In the standby power supply mode, the bleeder resistor 13 and the filter 12 in the conventional power supply device 1 will generate a relatively large power consumption, especially the filter 12 including the inductance element and the capacitor element will generate a relatively large power consumption in the standby power supply mode. huge power consumption

Therefore, the standby power consumption of the traditional power supply device 1 is still unable to reach the current scheme adopted by the International Energy Agency (IEA) and promoted by various advanced countries and regions in the world to "reduce the standby power of a single electrical product to 0.1W".

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