Power-saving circuit of electronic device

Abstract

The invention provides a power-saving circuit of an electronic device, which is connected between a battery and a host machine. The power-saving circuit comprises a trigger end, wherein the trigger end is used for receiving an external trigger signal and is electrically connected with a switch unit, and the switch unit comprises a control end, a battery end and a host machine end; the control end is electrically connected with the trigger end; the battery end is electrically connected with the battery; the host machine end is electrically connected with the host machine; a selecting module, a high-level trigger module, an N-channel field-effect tube, a relay and a one-way conducting element are arranged in the switch unit; before the trigger end receives a trigger signal, the battery end and the host machine end are in an off state; and after the trigger end receives the trigger signal, the high-level trigger module is used for emitting a high-level signal, and the battery end and the host machine end are converted from the off state into an on state. The electronic device of the invention does not consume power in the off state; and even if the electronic device is in the off state for a long time, the battery still maintains original power.

Description

【Technical field】 [0001] The invention relates to a power-saving circuit of an electronic device, in particular to a power-saving circuit of an electronic device that no longer consumes power in a shutdown state. 【Background technique】 [0002] With the advent of the information age, electronic devices have become one of the main tools for people to obtain information. Among them, notebook computers are not only the most frequently chosen commodity by consumers, but also a market product that manufacturers are committed to developing to make them more perfect. When the computer is assembled and ready to be shipped, the manufacturer will charge the battery of the notebook computer to a half-saturated state and install it in the notebook computer. However, the notebook computer will still consume 5mA to 8mA of power when it is turned off. When the electronic device is turned off, the keyboard control unit will still consume power, although the keyboard control unit can enter t...

AI Technical Summary

Problems solved by technology

[0004] However, although Chinese mainland patent application No. 200610123166.8 can reduce the battery power consumption when the electronic device is off, that is, it is equivalent to prolonging the power storage time of the battery, it cannot completely avoid the battery power consumption when the electronic device is off. If the electronic device is turned off for too long, the power in the battery will be exhausted, and it may not be able to turn on the device

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