Variable frequency oscillator

Claim 1

AN OSCILLATOR HAVING AN OUTPUT FREQUENCY PROPORTIONAL TO THE MAGNITUDE OF AN APPLIED DIRECT CURRENT INPUT, COMPRISING A PAIR OF TRANSISTORS OF OPPOSITE TYPE, A DIRECT CONNECTION BETWEEN THE COLLECTOR OF THE SECOND OF SAID TRANSISTORS TO THE BASE OF A FIRST OF SAID TRANSISTORS FORMING A REGENERATIVE FEEDBACK CONNECTION, A DIRECT CONNECTION BETWEEN THE COLLECTOR OF SAID FIRST TRANSISTOR TO THE BASE OF SAID SECOND TRANSISTOR FOR CONTROLLING THE CONDUCTIVITY OF THE LATTER BY THE OUTPUT OF THE FORMER, BIASING MEANS FOR NORMALLY MAINTAINING NON-CONDUCTIVE SAID SECOND TRANSISTOR, AN INPUT CIRCUIT FOR SAID FIRST TRANSISTOR INCLUDING IN SERIES A VARIABLE DIRECT CURRENT SOURCE OF SUPPLY, THE EMITTER-BASE JUNCTION OF SAID FIRST TRANSISTOR, A LOAD RESISTOR AND A SOURCE OF REFERENCE VOLTAGE OF POLARITY TO BIAS SAID FIRST TRANSISTOR TO ITS NON-CONDUCTIVE STATE, A CAPACITOR CONNECTED ACROSS SAID DIRECT CURRENT SOURCE OF SUPPLY FOR RECEIVING A CHARGE THEREFROM TO CHANGE THE POTENTIAL APPLIED TO SAID EMITTER-BASE JUNCTION TO RENDER SAID FIRST TRANSISTOR CONDUCTIVE WHEN THE POTENTIAL OF SAID CAPACITOR RISES TO A VALUE AT LEAST EQUAL TO SAID REFERENCE VOLTAGE FOR FLOW OF CURRENT TO THE BSAE OF SAID SECOND TRANSISTOR FOR RENDERING IT CONDUCTIVE, SAID REGENERATIVE FEEDBACK CONNECTION THEREUPON PRODUCING OPERATION OF SAID TRANSISTORS IN THEIR FULLY CONDUCTIVE CURRENT SATURATED STATES FOR DISCHARGE OF SAID CAPACITOR THROUGH A CIRCUIT INCLUDING ONLY THE LOW INTERNAL RESISTANCES OF SAID CURRENT SATURATED TRANSISTORS, THE CURRENT FLOWING FROM SAID CAPACITOR RAPIDLY DECREASING TO A VALUE WHICH RESULTS IN A RISE IN POTENTIAL AT THE COLLECTOR OF SAID SECOND TRANSISTOR THEREBY CAUSING A RISE OF POTENTIAL ON THE BASE-EMITTER JUNCTION OF SAID FIRST TRANSISTOR TO RENDER IT NON-CONDUCTIVE UNTIL THE POTENTIAL OF SAID CAPACITOR AGAIN RISES TO A VALUE AT LEAST EQUAL TO SAID REFERENCE VOLTAGE, AND MEANS INCLUDING A CONNECTION TO THE COLLECTOR OF SAID SECOND TRANSISTOR FOR DERIVING OUTPUT PULSES AT SAID OUTPUT AT A FREQUENCY PROPORTIONAL TO THE MAGNITUDE OF SAID DIRECT CURRENT INPUT.