Ultra-large current electronic switching circuit

• Main Authors: XU YONGHENG, LI ZHENGLI, ZHANG QIANG
• Format: Patent
• Language: Chinese; English
• Published: 29.11.2019
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; PULSE TECHNIQUE

The invention discloses an ultra-large current electronic switching circuit. The electronic switching circuit comprises M basic circuit units, an isolation power supply, a signal isolation circuit anda driving control circuit. Each basic circuit unit comprises a first MOSFET tube, a second MOSFET tube, a first pull-down resistor, a second pull-down resistor, a first gate drive resistor and a second gate drive resistor. According to the invention, a circuit structure can ensure that the current of a test system is more than 1000A and barrier-free rapid switching on and switching off can be carried out. An electronic switch can effectively replace a conventional contactor or relay, and effectively solves the problems that the contactor or relay is large in size, limited in service life, large in loss, large in driving circuit power, large in contact voltage drop, high in noise and the like. The circuit structure is simple in implementation mode, the electronic switch is rapidly and reliably turned on and turned