Voltage controlled variable frequency oscillator having means for insuring proper starting of oscillations

Claim 1

AN OSCILLATOR SYSTEM COMPRISING: MULTIVIBRATOR MEANS HAVING A VARIABLE DUTY CYCLE DEPENDENT UPON THE VALUE OF ELECTRIC CURRENT SUPPLIED TO AT LEAST ONE CAPACITANCE TIMING CIRCUIT THEREOF, CURRENT CONTROL TRANSLATING MEANS HAVING AN OUTPUT CIRCUIT CONNECTED WITH SAID TIMING CIRCUIT AND HAVING AN INPUT CONTROL CIRCUIT FOR CONTROLLING CURRENT FLOW IN SAID OUTPUT CIRCUIT, MEANS FOR CONNECTING A SOURCE OF ELECRTIC POTENTIAL WITH SAID TIMING CIRCUIT OF SAID MULTIVIBRATOR, AND MEANS FOR SUPPLYING AN ANALOG CONTROL POTENTIAL TO SAID INPUT CONTROL CIRCUIT OF SAID TRANSLATING MEANS FOR VARYING THE DUTY CYCLE OF SAID MULTIVIBRATOR MEANS IN ACCORDANCE WITH SAID ANALOG CONTROL VOLTAGE, WHEREIN THE IMPROVEMENT COMPRISES A SEMICONDUCTOR STARTING CONTROL AMPLIFIER DEVICE HAVING AT LEAST A BASE ELECTRODE, AN EMITTER ELECTRODE AND A COLLECTOR ELECTRODE, THE COLLECTOR AND EMITTER ELECTRODES PROVIDING AN OUTPUT CIRCUIT IN SERIES WITH THE OUTPUT CIRCUIT OF SAID CURRENT CONTROL TRANSLATING MEANS, AND RECTIFIER MEANS CONNECTED TO THE OUTPUT OF SAID MULTIVIBRATOR MEANS AND TO THE BASE ELECTRODE OF SAID START-