High power switching tube zero voltage switching system

Abstract

The invention relates to a switching power source system of an electronic circuit, in particular to a non-voltage control system of a switching tube. According to the non-voltage switching system of the high-power switching tube, the end A of the system is connected to a signal source of power switching tubes in parallel, the end A is in parallel connection with a resistor R1 and a diode D1, the resistor R1 is in series connection with a reverse-phase trigger U1A and a reverse-phase trigger U1B sequentially, the input end of the resistor R1 and the input end of the inverse-phase trigger U1A are respectively connected with a filtering capacitor C1, the negative electrode of the diode D1 is connected to the output end of the inverse-phase trigger U1B, the output end of the inverse-phase trigger U1B is in series connection with a resistor R2, an isolation driver U2, a resistor R3 and a transistor Q1 sequentially, a capacitor C2 is connected between the end C of the transistor Q1 and the end E of the transistor Q1 in parallel and the end C and the end E are connected with the power switching tubes in parallel respectively. The non-voltage switching system of the high-power switching tube is simple in circuit structure, realizes non-voltage disconnection and lowers the switching consumption of the switching tubes.

Description

technical field [0001] The invention relates to a switching power supply system of an electronic circuit, in particular to a zero-voltage control system of a switching tube. Background technique [0002] With the rapid development of information, energy, and electronic technologies, switching circuits are widely used in many fields such as post and telecommunications, communications, electric power, transportation, ships, aerospace, and emergency lighting. However, when in use, the current is large, and in the high-frequency switching state, this type of switching tube is prone to interference harmonics, and at the same time, the peak current and loss cause the high-power tube to overheat, which greatly reduces its life. Contents of the invention [0003] The technical effects of the present invention can overcome the above-mentioned defects, and provide a high-power switching tube zero-voltage switching system, which can realize its control function in a zero-voltage stat...

AI Technical Summary

Problems solved by technology

However, when in use, the current is large, and in the high-frequency switching state, this type of switching tube is prone to interference harmonics, and at the same time, the peak current and loss cause the high-power tube to overheat, which greatly reduces its life.

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