Patent ID: 6320297
Filing Date: 2001-11-20
Classification: H01L

Abstract:
A method for low-loss, periodic control of a capacitive load C.sub.P comprising the steps of:prior to the start of load C.sub.P actuation, charging a capacitor bank C.sub.1 to an operating voltage from a voltage source U.sub.B ;charging the load C.sub.P with voltage from the capacitor bank C.sub.1 via a resonant circuit formed by a reactance coil connected in series with a first freewheeling diode D.sub.E and the load C.sub.P ; andwhen voltage from load C.sub.P is required, connecting the load C.sub.P via a load switch S.sub.E to the reactance coil L.sub.1 and then via a second freewheeling diode D.sub.L to the capacitor bank in order to discharge the voltage at load C.sub.P, said second freewheeling diode D.sub.L being connected in series with the reactance coil L.sub.1 and in parallel with the capacitor bank C.sub.1.