Soft start/soft turn-off electronic switch

Abstract

The invention relates to the technical field of electronics, in particular to a soft-start / soft-turn-off electronic switch. The electronic switch comprises an electronic switch main circuit and a softstart / soft turn-off circuit. According to the electronic switch main circuit, an intelligent switch tube BTS555 is used as a core component; a modular design idea is adopted; universality and interchange of the electronic switch are realized; main electricity is input into the electronic switch main circuit. The electronic switch main circuit carries out current sampling and voltage sampling. A current signal and a voltage signal are respectively obtained through linear isolation; current sampling passes through an over-current protection circuit and is isolated by an optical coupler to obtain a protection signal. Wherein the soft start / soft turn-off circuit is connected with the electronic switch main circuit through the drive circuit, and a control signal passes through the optocouplerisolation and drive circuit in sequence and passes through the electronic switch main circuit to realize main power output, so that the current impact during starting of motor loads can be reduced, and the power supply quality is improved; and the reduction of the current impact is helpful for prolonging the safe service life of the power device.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a soft-start / soft-off electronic switch. Background technique [0002] In armored vehicles, the traditional switch is a mechanical contact switch. In the process of turning it on and off, there are hidden dangers such as sparks, electric shock ablation, and large electromagnetic interference, which reduces the reliability of the power supply system of armored vehicles. The electrified land warfare platform is a brand-new concept that requires a power supply network with high power supply quality, high reliability, and high intelligence. Therefore, traditional mechanical contactors, solid state relays and other circuit switches can no longer meet the requirements of the all-electric land warfare platform. need. Contents of the invention [0003] The purpose of the present invention is to provide a soft-start / soft-off electronic switch for the defects and deficiencies of the...

AI Technical Summary

Problems solved by technology

[0002] In armored vehicles, the traditional switch is a mechanical contact switch. In the process of turning it on and off, there are hidden dangers such as sparks, electric shock ablation, and large electromagnetic interference, which reduces the reliability of the power supply system of armored vehicles. The electrified land warfare platform is a brand-new concept that requires a power supply network with high power supply quality, high reliability, and high intelligence. Therefore, traditional mechanical contactors, solid state relays and other circuit switches can no longer meet the requirements of the all-electric land warfare platform. need

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