Indretning til induktiv opvarmning af arbejdsstykker

摘要

A first current inverter (22) operates a first oscillating circuit (20) designed as a resonance frequency (RF) for a first frequency (FF). A voltage-controlled second current inverter (32) operates a second oscillating circuit (30) designed as a RF for a second frequency higher than the FF. A branch under load (10) with on-load connections (AL1,AL2) has an induction coil (I).