Variable-width transistor pulse generator employing variable capacitive phase-shift circuit for consecutive switching of two tunnel diodes

Claim 1

A PULSE GENERATOR ARRANGEMENT FOR GENERATING A VOLTAGE PULSE FOR EACH POSITIVE HALFWAVE OF AN H.-F. ALTERNATING VOLTAGE APPLIED ON AN INPUT TERMINAL, WITH ONE TRANSISTOR HAVING EMITTER, BASE AND COLLECTOR ELECTRODES AND A LOAD IMPEDANCE CONNECTED IN THE COLLECTOR SIDE OF THE COLLECTOR-EMITTER CIRCUIT, THE ARRANGEMENT INCLUDING FURTHER: A FIRST TUNNEL DIODE, A SECOND TUNNEL DIODE, THE CATHODES OF SAID DIODES BEING DIRECTLY CONNECTED TO A REFERENCE POTENTIAL TERMINAL, THE ANODE OF THE FIRST DIODE BEING DIRECTLY CONNECTED TO THE EMITTER OF SAID TRANSISTOR AND THE ANODE OF THE SECOND DIODE BEING DIRECTLY CONNECTED TO THE BASE OF SAID TRANSISTOR, A CAPACITANCE OF ADJUSTABLE CAPACITANCE CONNECTED BETWEEN SAID INPUT TERMINAL AND SAID EMITTER AND A FIXED RESISTOR CONNECTED BETWEEN SAID INPUT TERMINAL AND SAID BASE, THE CAPACITANCE OF SAID CAPACITOR BEING SO SET AND THE VALUE OF SAID RESISTOR BEING SO CHOSEN THAT, BOTH TUNNEL DIODES OPERATE IN THEIR LOW VOLTAGE STATE DURING EACH NEGATIVE HALFWAVE OF THE INPUT SIGNAL, THE FIRST TUNNEL DIODE BEING SWITCHED TO ITS HIGH VOLTAGE OPERATING STATE IN ADVANCE OF EACH POSITIVE HALFWAVE OF THE INPUT SIGNAL, THUS CAUSING THE CONDUCTION OF SAID TRANSISTOR, AND THE SECOND TUNNEL DIODE BEING SWITCHED LATER TO ITS HIGH VOLTAGE STATE FOR EACH POSITIVE HALFWAVE, THUS STOPPING THE CONDUCTION OF SAID TRANSISTOR.