Ansteuervorrichtung für einen elektromagnetischen Schalter.

摘要

Electric excitation device for the coil(s) (1) of an electromagnetic actuator, in particular of a linear motor, whose coil (1) exhibits low self-inductance. …This coil (1) is powered through a bridge (3) of transistors (6, 17, 10, 14). The error (E) between the set point voltage (Vc) and a voltage proportional to the current I in this coil (1) is used to block a pair (6, 17 or 10, 14) of transistors of the bridge, and simultaneously saturate one transistor (6 or 10) of the other pair and operate the other transistor (17 or 14) in the linear regime. Two electronic interruptors (29, 33) and a sign discriminator (38) are used for this purpose. ……