Capacitive switch power supply with low power consumption standby function

Abstract

The invention discloses a capacitance turning-on electrical source with the low-power-consumption standby function. The electrical source comprises a commercial power separating electrical source, an electrical source managing circuit and a capacitance voltage-reducing, rectifying and filtering electrical source; wherein, the commercial power separating electrical source is used for providing power needed by the main circuit of a device during working; the electrical source managing circuit is used for receiving a standby / start-up signal so as to control turning on / off of the commercial power separating electrical source; and the capacitance voltage-reducing, rectifying and filtering electrical source is used for providing working current to the electrical source managing circuit. An electronic device provided with the capacitance turning-on electrical source with the low-power-consumption standby function of the invention can accomplish various standby functions. Furthermore, power consumption of the electronic device can be reduced to a microwatt magnitude which is the lowest. The standby energy consumption is greatly lower than the reference standby standard submitted by the International Energy Agency, and the service life of the device is prolonged at the same time.

Description

technical field [0001] The invention relates to a power supply device for converting AC mains power into low-voltage direct current, in particular to a power supply device which can meet the standby requirements of electrical equipment and has extremely low power consumption during standby. Background technique [0002] At present, in order to prolong the service life and save energy, most of the electronic equipments are equipped with a standby (STAND-BY) mode, that is, when the equipment is temporarily not working, the equipment is allowed to enter a dormant state. In the standby mode, the power consumption of the electronic equipment Do the minimum. In order to ensure that the electronic equipment can resume work at any time, the power supply must be in a working state to supply power to the host circuit so that the equipment can receive a power-on signal at any time. Now, the power consumption of the host circuit during standby can be extremely low, for example, at the ...

AI Technical Summary

Problems solved by technology

[0015] In order to solve the problem that the existing electronic equipment consumes a lot of power during standby, the present invention provides a power supply with low power consumption (close to zero power consumption) for standby , when the device is in the standby state, the host circuit does not consume any power, and the power consumption of the power supply is reduced to an almost negligible level (the lowest power consumption in microwatts can be achieved), and the device is waiting to start signal and ready to reboot at any time

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