Power-saving control circuit and control method thereof

Abstract

The invention discloses a power-saving control circuit and a control method thereof. The power-saving control circuit comprises a first switch and a second switch which are connected in parallel, anda controller, wherein the second switch comprises a first end, a second end and a third end, the first end and the second end are connected with two ends of the first switch, the third end is taken asa control end, the controller comprises a first power source end, a power source control signal output end and a second power source end, the first power source end is connected with a positive poleof a supply power source through the first switch, the second power source end is connected with a negative pole of the supply power source, the power source control signal output end is connected with the control end of the second switch, when the first switch is conducted, a first control signal is outputted by the power source control signal output end and is used for controlling the second switch for conduction, when the continuous power failure time of the first switch surpasses the preset threshold, a second control signal is outputted by the power source control signal output end and isused for controlling the second switch for power failure. The power-saving control circuit is advantaged in that power consumption can be reduced, and service life of the power source is improved.

Description

technical field [0001] The invention relates to the technical field of circuits, in particular to a power-saving control circuit and a control method thereof. Background technique [0002] With the continuous improvement of people's consumption level and quality of life, various testing instruments continue to emerge. Such as skin tester, blood sugar tester, etc., these small devices are generally powered by batteries. Due to the relatively high power consumption during operation, the instrument will automatically enter sleep mode when the user does not use the instrument. [0003] At present, this way of entering sleep mode can greatly reduce power consumption, but some devices still have certain power consumption in sleep mode. Even if it is left unused, when the user uses it again after a period of time, the battery power may be exhausted, resulting in a shortened battery life. [0004] Therefore, it is urgent to develop a power-saving control circuit with zero power c...

AI Technical Summary

Problems solved by technology

[0003] At present, this way of entering sleep mode can greatly reduce power consumption, but some devices still have a certain amount of power consumption in sleep mode

Even if it is left unused, when the user uses it again after a while, the battery power may have been exhausted, resulting in a shorter battery life

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