Voltage supply method for load with polarity inversion protection, involves deactivating polarity inversion protection arrangement if alternating voltage component detected at its input

摘要

The active polarity inversion protection arrangement (18) is active in a first operating mode in which a direct voltage is applied. In a second operating mode, in which an alternating voltage component is detected at the input of the polarity inversion protection arrangement, the polarity inversion protection arrangement is deactivated by an evaluation and control device (20). AN Independent claim is also included for the following: a circuit for implementing the inventive method.