A multi-trigger source low power self-locking electronic switch

Abstract

The invention discloses a multi-trigger source low-power self-locking electronic switch, which adopts multi-trigger sources to realize the power supply control of electrical equipment. The second type of trigger source connection circuit composed of a trigger source resistor and an optocoupler; if the trigger source and the electrical equipment share the same ground, then connect to the first type of circuit; if the trigger source and the electrical equipment do not share the same ground, then connect to into the second type of circuit; the source of the MOS tube is connected to the collector of the self-locking control transistor through two resistors, and the gate of the MOS tube is connected to the collector of the self-locking control transistor through a resistor. The first type of circuit Both the output terminal of the trigger source and the output terminal of the second-type circuit are connected to the collector of the self-locking control transistor; the first-type and second-type trigger source connection circuits both have ground terminals, and the emitters of the self-locking control transistor are both grounded. The circuit can realize flexible control of multiple trigger sources and low power consumption.

Description

technical field [0001] The invention belongs to the field of electronic switches. Background technique [0002] In the development process of a certain type of product, an internal recorder is required to record the internal signal and working status of the product. There are various test methods and processes in the development of this product, which requires the built-in power supply of the internal recorder, which can be flexibly powered on and started in various tests, and can be automatically powered off after the test is completed. [0003] This type of product is small in size and cannot provide a mechanical power switch for the internal recorder. After the product is assembled, it may be stored for a long time for several days to several months before the test. After the test starts, the test may be suspended due to various circumstances. Contents of the invention [0004] In view of this, the present invention provides a low-power self-locking electronic switch w...

AI Technical Summary

Problems solved by technology

[0003] This type of product is small in size and cannot provide a mechanical power switch for the internal recorder, and the product may be stored for a long time from several days to several months after the assembly is completed and before the test, and the test may be suspended due to various circumstances after the test starts.

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