Constant amplitude, variable frequency sawtooth generator

Claim 1

A SAWTOOTH GENERATOR HAVING AN OUTPUT FREQUENCY WHICH VARIES IN ACCORDANCE WITH AN INPUT VOLTAGE COMPRISING A CAPACITOR, AN INPUT TRANSISTOR, THE COLLECTOR AND EMITTER OF SAID INPUT TRANSISTOR BEING CONNECTED TO PROVIDE A CHARGING PATH FOR SAID CAPACITOR, SAID INPUT VOLTAGE BEING CONNECTED TO THE BASE OF SAID INPUT TRANSISTOR, SAID INPUT TRANSISTOR PROVIDING A CONSTANT CHARGING CURRENT TO SAID CAPACITOR FOR A GIVEN INPUT VOLTAGE, MEANS FOR DISCHARGING SAID CAPACITOR, SWITCHING MEANS RESPONSIVE TO THE VOLTAGE ACROSS SAID CAPACITOR FOR INITIATING AN OPERATION OF SAID DISCHARGING MEANS WHEN THE VOLTAGE ACROSS SAID CAPACITOR REACHES A FIRST PREDETERMINED VOLTAGE, MEANS FOR CLAMPING THE DISCHARGE OF SAID CAPACITOR AT A SECOND PREDETERMINED VOLTAGE, AND MEANS PRODUCING AN OUTPUT IN ACCORDANCE WITH THE VOLTAGE ACROSS SAID CAPACITOR WHEREBY SAID OUTPUT IS A SAWTOOTH WAVEFORM HAVING AN AMPLITUDE LIMITED BY SAID FIRST AND SAID SECOND PREDETERMINED VOLTAGES AND HAVING A FREQUENCY IN ACCORDANCE WITH THE MAGNITUDE OF SAID INPUT VOLTAGE.