Inductive transmitter for computer tomographs with ripple compensation

摘要

The switch has a power generator (23) for generating a pulsed direct current (DC) voltage or alternating current (AC) voltage from an input DC voltage (24). A resonance circuit comprises a resonance capacitor (28) and an inductive power transmitter for coupling electrical energy between rotatable units for feeding a load (12) with load voltage (13) and load current. A control unit (26) i.e. microcontroller, measures the input DC voltage and sets frequency of the power generator in dependence of the input DC voltage, so that one of the load voltage and the load current remains constant. An independent claim is also included for a method for generating a constant output voltage of an inductive coupler.