Low level transistor chopper circuit

Claim 1

A LOW LEVEL TRANSISTOR CHOPPER CIRCUIT FOR CONVERTING THE VOLTAGE FROM A DIRECT INPUT VOLTAGE SOURCE INTO AN ALTERNATING OUTPUT VOLTAGE ACROSS A LOAD, SAID LOAD AND SAID INPUT VOLTAGE SOURCE EACH HAVING A FIRST TERMINAL AND A COMMON TERMINAL COMPRISING A FIRST AND SECOND TRANSISTOR OF MATCHING CHARACTERISTICS EACH HAVING COLLECTOR, EMITTER AND BASE ELECTRODES, THE COLLECTOR TO EMITTER PATH OF SAID FIRST TRANSISTOR BEING COUPLED IN SERIES WITH SAID LOAD BETWEEN SAID FIRST TERMINALS, THE COLLECTOR TO EMITTER PATH OF SAID SECOND TRANSISTOR BEING COUPLED IN SHUNT WITH SAID LOAD, CONTROL SIGNAL MEANS FOR APPLYING FIRST AND SECOND CONTROL VOLTAGES BETWEEN SAID COMMON TERMINAL AND THE BASE ELECTRODES OF SAID FIRST AND SECOND TRANSISTORS RESPECTIVELY, THEREBY PROVIDING FIRST AND SECOND ALTERNATING CURRENT SIGNALS OF EQUAL AMPLITUDE AND OPPOSITE PHASE TO THE BASE ELECTRODES OF SAID FIRST AND SECOND TRANSISTORS RESPECTIVELY, SAID SIGNALS CAUSING SAID FIRST AND SECOND TRANSISTORS TO BE ALTERNATELY FULLY CONDUCTING AND NONCONDUCTING, WHEREBY AN ALTERNATING OUTPUT VOLTAGE APPEARS ACROSS THE LOAD WHICH IS PROPORTIONAL TO THE MAGNITUDE OF THE DIRECT INPUT VOLTAGE.