Bridge circuit for controlling electrical actuator, has two semiconductor switches attached to high potential, where switches switch-off when exceeding current, and this switch-off continues until voltage lies close above preset voltage

摘要

The circuit has four semiconductor switches (1, 2, 31, 41), where two switches (1, 2) are attached to low potential, and other two switches (31, 41) are attached to high potential. The switches (31, 41) independently switch-off when exceeding a voltage, where the switch-off continues until voltage lies above a preset voltage. The switches (31, 41) have a serial connection of voltage control unit.