Temperature and voltage compensated multivibrator

Claim 1

IN AN ASTABLE MULTIVIBRATOR HAVING A FIRST TRANSISTOR AND A SECOND TRANSISTOR EACH OF SAID FIRST AND SECOND TRANSISTORS HAVING A BASE ELECTRODE, AN EMITTER ELECTRODE, AND A COLLECTOR ELECTRODE, SAID EMITTER ELECTRODES BEING CONNECTED TO CIRCUIT GROUND, A FIRST CAPACITOR CONNECTED TO THE COLLECTOR ELECTRODE OF SAID FIRST TRANSISTOR AND TO THE BASE ELECTRODE OF SAID SECOND TRANSISTOR, A SECOND CAPACITOR CONNECTED TO THE COLLECTOR ELECTRODE OF SAID SECOND TRANSISTOR AND THE BASE ELECTRODE OF SAID FIRST TRANSISTOR, A SOURCE OF VOLTAGE, A FIRST RESISTOR HAVING FIRST AND SECOND TERMINALS, SAID FIRST TERMINAL CONNECTED TO THE COLLECTOR ELECTRODE OF SAID FIRST TRANSISTOR, A SECOND RESISTOR HAVING FIRST AND SECOND TERMINALS, SAID FIRST TERMINAL OF SAID SECOND RESISTOR CONNECTED TO THE COLLECTOR ELECTRODE OF SAID SECOND TRANSISTOR, A THIRD RESISTOR HAVING FIRST AND SECOND TERMINALS, SAID FIRST TERMINAL OF SAID THIRD RESISTOR CONNECTED TO THE BASE ELECTRODE OF SAID FIRST TRANSISTOR AND SAID SECOND TERMINAL OF SAID THIRD RESISTOR CONNECTED TO SAID SOURCE OF VOLTAGE, A FOURTH RESISTOR HAVING FIRST AND SECOND TERMINALS, SAID FIRST TERMINAL OF SAID FOURTH RESISTOR CONNECTED TO THE BASE ELECTRODE OF SAID SECOND TRANSISTOR AND SAID SECOND TERMINAL OF SAID FOURTH RESISTOR CONNECTED TO SAID SOURCE OF VOLTAGE, AN IMPROVED VOLTAGE-CONTROLLING DEVICE FOR SUPPLYING A CONTROLLED VOLTAGE TO SAID FIRST AND SECOND RESISTORS, SAID DEVICE COMPRISING: (A) A THIRD TRANSISTOR HAVING ITS EMITTER CONNECTED TO SAID SOURCE OF VOLTAGE AND ITS BASE CONNECTED TO SAID SECOND TERMINAL OF SAID FIRST RESISTOR AND SAID SECOND TERMINAL OF SAID SECOND RESISTOR; AND (B) A FIFTH RESISTOR CONNECTED BETWEEN THE COLLECTOR OF SAID THIRD TRANSISTOR AND CIRCUIT GROUND, THE VALUE OF SAID FIFTH RESISTOR BEING SUCH AS TO CAUSE THE BASETO-EMITTER VOLTAGE OF SAID THIRD TRANSISTOR TO BE EQUAL TO THE MINIMUM BASE-TO-EMITTER VOLTAGE WHICH CAUSES SAID FIRST AND SECOND TRANSISTORS TO CONDUCT.