Anti-sparking circuit and power supply

Abstract

This application discloses an anti-sparking circuit and a power supply, wherein the positive end of the power supply is electrically connected to the first end of the mechanical switch of the device, the second end of the mechanical switch is connected to the first end of the switch vibration judgment circuit and the RC extension The first end of the timing circuit is electrically connected to the first end of the electronic switch; the second end of the RC delay circuit is electrically connected to the second end of the switch jitter judgment circuit, and the third end of the RC delay circuit is connected to the threshold judgment circuit. The first end of the circuit is electrically connected; the first end of the switch control circuit is electrically connected to the second end of the threshold judgment circuit, and the second end of the switch control circuit is electrically connected to the second end of the electronic switch; the electronic switch The third terminal is electrically connected to the positive pole of the equipment power supply circuit; the negative pole of the power supply is connected to the third terminal of the switch jitter judgment circuit, the fourth terminal of the RC delay circuit, the third terminal of the switch control circuit and the negative pole of the equipment power supply circuit sexual connection. Thereby avoiding the impact of instantaneous high current, and will not produce sparking phenomenon.

Description

technical field [0001] The present application relates to the technical field of power supply, and in particular, to a fire prevention circuit and a power supply. Background technique [0002] Existing DC high-current power supply products, when the mechanical switch is closed or the power supply is unplugged, a large current flows instantaneously, and a spark phenomenon often occurs. On the one hand, this phenomenon will cause oxidation at the switch or power supply interface. It will cause damage to the switch or power interface, and on the other hand, sparks will be generated in the ignition phenomenon, resulting in a fire hazard. SUMMARY OF THE INVENTION [0003] The main purpose of this application is to provide an anti-sparking circuit and a power supply, aiming to solve the problem of the existing DC high-current power supply products, when the mechanical switch is closed or the power supply is unplugged and plugged, there is an instantaneous large current flowing, ...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of this application is to provide an anti-sparking circuit and a power supply, aiming at solving the problem of existing DC high-current power supply products. When the mechanical switch is closed or the power supply is plugged in, there is an instantaneous high Technical Problems of the Striking Phenomenon

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