摘要： 这种接触器电路 self-oscillates 尽量减少电力消耗上。比较器开关作为必要的线圈之间的滞后限制当前向上和向下斜。电路开始 self-oscillate 当你增加的电压。Maxim > App Notes > AMPLIFIER AND COMPARATOR CIRCUITS MISCELLANEOUS CIRCUITS Keywords: self oscillating, contact driver, hold power, step-down converter, solenoid, switches, relays, Dec 03, 2002 standby inverter, Allbright 2180-40B contactor APPLICATION NOTE 1792 Self-Oscillating Contactor Driver Minimizes Hold Power Abstract: This contactor circuit self-oscillates to minimize power consumption when on. The comparator switches as necessary to ramp the coil current up and down between the hysteresis limits. The circuit starts to self-oscillate as you increase the supply voltage. For switching currents greater than about 25A, solenoid-operated switches called contactors are used in place of relays. A common application for contactors is in disconnecting the battery from a ……