Ohm resistive load e.g. halogen lamp, energizing circuit, has voltage ripple determining device determining ripple at divider and generating signal from ripple, where signal denotes electrical power that is transferred to load

摘要

The circuit has an inverter half bridge (6) with two electronic switches (8, 9) that are connected in series with each other. A capacitive voltage divider (7) has capacitors (13, 14) that are connected in series. A load (1) is connected to the half bridge and the voltage divider. A voltage ripple determining device (3) including a rectifier circuit determines a voltage ripple in the voltage divider and generates a signal from the ripple, where the signal denotes the electrical power that is transferred to the load.