Circuit for converting a sinusoidal voltage to a voltage having a non- sinusoidal cyclic wavefokm

Claim 1

A CIRCUIT FOR CONVERTING A SUBSTANTIALLY SINUSOIDAL ALTERNATING VOLTAGE TO A CYCLIC VOLTAGE OF NON-SINUSOIDAL WAVE SHAPE, COMPRISING A SOURCE OF SAID ALTERNATING VOLTAGE, AN AMPLIFIER HAVING AN INPUT CIRCUIT AND AN OUTPUT CIRCUIT, MEANS APPLYING SAID ALTERNATING VOLTAGE TO SAID INPUT CIRCUIT, A SERIES CIRCUIT OF A CAPACITOR AND RECTIFIER MEANS, A POINT OF REFERENCE POTENTIAL CONNECTED TO ONE END OF SAID SERIES CIRCUIT, MEANS FOR APPLYING SAID ALTERNATING VOLTAGE TO THE OTHER END OF SAID SERIES CIRCUIT BY WAY OF SAID AMPLIFIER WHEREBY SAID RECTIFIER IS CONDUCTIVE DURING ONLY PART OF EACH CYCLE OF SAID ALTERNATING VOLTAGE FOR CHARGING SAID CAPACITOR IN ONE SENSE, MEANS FOR CHARGING SAID CAPACITOR IN THE OPPOSITE SENSE DURING THE REMAINDER OF EACH CYCLE, MEANS DERIVING A NEGATIVE FEEDBACK VOLTAGE FROM SAID OTHER END OF SAID SERIES CIRCUIT, MEANS APPLYING SAID NEGATIVE FEEDBACK VOLTAGE TO THE INPUT CIRCUIT OF SAID AMPLIFIER, AND MEANS FOR DERIVING SAID CYCLIC VOLTAGE FROM SAID OUTPUT CIRCUIT.