Abstract: A resonance controlled conductive heating apparatus for heating a conductive load, has input terminals for receiving AC power. The primary winding of a transformer is coupled to the input terminals. First and second electrodes are coupled to the secondary winding of the transformer and are adapted respectively to electrically engage the conductive load in first and second contact points spaced from each other for direct passage of current therebetween. A resonant circuit is coupled between the secondary winding of the transformer and the electrodes. The resonant circuit has inductance, capacitance, voltage and operating frequency properties set to control a maximum current flowing across the conductive load between the electrodes.