Electric voltage comparison means

Claim 1

AN ELECTRIC VOLTAGE COMPARISON MEANS INCLUDING TWO SIMILAR TRANSISTORS HAVING THEIR EMITTER-COLLECTOR CIRCUITS CONNECTED IN PARALLEL WITH ONE ANOTHER AND SHARING A COMMON EMITTER CIRCUIT LOAD RESISTOR, EACH TRANSISTOR HAVING ASSOCIATED THEREWITH A POSITIVE FEEDBACK MEANS FOR FEEDING BACK ENERGY FROM ITS COLLECTOR CIRCUIT TO ITS EMITTER CIRCUIT IN A SENSE TENDING TO ACCELERATE ANY CHANGE IN ITS COLLECTOR CURRENT, AND EACH OF THE TWO FEEDBACK MEANS HAVING AN OUTPUT CIRCUIT FOR PROVIDING AN OUTPUT SIGNAL WHEN THE COLLECTOR CIRCUIT CURRENT OF THE ASSOCIATED TRANSISTOR CHANGES IN VALUE, INPUT CIRCUIT MEANS FOR APPLYING TWO D.C. VOLTAGE SIGNALS FOR COMPARISON TO THE BASEEMITTER CIRCUITS RESPECTIVELY OF THE TRANSISTORS, AND AN AUXILIARY CIRCUITS FOR CONNECTING THE JUNCTION OF THE COMMON EMITTER LOAD RESISTOR AND THE TWO EMITTER CIRCUITS OF THE TRANSISTORS WITH A SOURCE OF BIAS POTENTIAL AND INCLUDING A VOLTAGE PULSE PRODUCING MEANS FOR MOMENTARILY VARYING THE POTENTIAL OF THIS JUNCTION IN A STEP-LIKE MANNER WHEREBY TO CAUSE THE TRANSISTOR HAVING A BASE POTENTIAL NEARER THE BIAS POTENTIAL OF THE BIAS SOURCE TO CHANGE RAPIDLY BETWEEN ITS NON-CONDUCTIVE AND CONDUCTIVE STATES WHEN ENERGIZED FRM AN APPROPRIATE D.C. VOLTAGE SUPPLY SOURCE.