A power supply includes a storage capacitor which can be charged with a rectified input current by means of a current-limiting element which is controlled by a drive circuit. The direct-axis component of current and the direct-axis component of voltage on the current limiting element are supplied to the control circuit as input values and the current limiting element is controlled in such a way that it is not subjected to more than a predetermined maximum power loss.
This application is the national phase under 35 U.S.C. .sctn. 371 of PCT International Application No. PCT/DE01/02152 which has an International filing date of Jun. 8, 2001, which designated the United States of America and which claims priority on German Patent Application number DE 200 10 283.4 filed Jun. 8, 2000, the entire contents of which are hereby incorporated herein by reference.
The invention relates to a method for switching a semi-conductor circuit breaker by means of which the resistance of the breaker gap of the semi-conductor circuit breaker is controlled by a control voltage (Vst), such that the power loss (Pist) from the circuit breaker does not exceed a predetermined setpoint (Psoll). The invention also relates to a device for carrying out said method wherein a transfer gate, which is controlled by a charge pump, is used as a semi-conductor circuit breaker.
