High-frequency generator with improved cathode current regulated high-frequency oscillator

摘要

A high-frequency heating generator, comprising an electron tube (B) for industrial systems ranging from several kilowatts to a number of megawatts. In similar systems employing an electron tube oscillator a substantial amount of power is dissipated in at least one control element (T) connected in the electron tube cathode circuit at power leads below the maximum power level of the apparatus. To obviate this drawback, an impedance circuit (ZK) is connected in parallel with the control element (T), which circuit dissipates part of the power to be dissipated in the cathode circuit.