Sharp rise and fall time pulse generator employing two sequentially gated avalanche transistors

Claim 1

IN A GENERATOR FOR DEVELOPING A PULSATING ELECTRICAL OUTPUT SIGNAL, FIRST SEMICONDUCTOR CIRCUIT MEANS INCLUDING AT LEAST ONE S-NEGATIVE RESISTANCE SEMICONDUCTOR CIRCUIT ELEMENT FOR INITIATING EACH PULSE OF SAID PULSATING OUTPUT SIGNAL, AND SECOND SEMICONDUCTOR CIRCUIT MEANS CONNECTED TO SAID FIRST SEMICONDUCTOR CIRCUIT MEANS AND INCLUDING AT LEAST ONE OTHER S-NEGATIVE RESISTANCE SEMICONDUCTOR CIRCUIT ELEMENT FOR TERMINATING A PULSE OF SAID PULSATING OUTPUT SIGNAL, EACH OF SAID S-NEGATIVE SEMICONDUCTOR CIRCUIT ELEMENTS BEING CAPABLE OF BEING SWITCHED INTO CONDUCTION BY MEANS OF AN ELECTRICAL GATING PULSE, EACH OF SAID INITIATING AND TERMINATING CIRCUIT MEANS INCLUDING AN ELECTRICAL CHARGE STORAGE DEVICE AND AN IMPEDANCE ELEMENT, SAID STORAGE DEVICE BEING CONNECTED SO AS TO DISCHARGE THROUGH SAID S-NEGATIVE CIRCUIT ELEMENT AND SAID IMPEDANCE ELEMENT WHEN SAID S-NEGATIVE ELEMENT IS SWITCHED INTO CONDUCTION, AND MEANS FOR INTERCONNECTING SAID INITIATING AND TERMINATING CIRCUIT MEANS, DEVELOPING AN ELECTRICAL SIGNAL IN RESPONSE TO THE SWITCHING INTO CONDUCTION OF SAID OTHER S-NEGATIVE CIRCUIT ELEMENT IN SAID TERMINATING CIRCUIT MEANS, AND APPLYING SAID DEVELOPED SIGNAL TO SAID INITIATING CIRCUIT MEANS SO AS TO SWITCH SAID ONE S-NEGATIVE CIRCUIT ELEMENT INTO A NON-CONDUCTING STATE AND SUBSTANTIALLY TERMINATE A PULSE OF SAID OUTPUT SIGNAL, THE DISCHARGE TIMECONSTANT OF THE ELECTRICAL CHARGE STORAGE DEVICE AND IMPEDANCE ELEMENT FORMING A PART OF SAID SECOND SEMICONDUCTOR CIRCUIT MEANS BEING SUBSTANTIALLY LOWER THAN THE DISCHARGED TIME-CONSTANT OF THE ELECTRICAL CHARGE STORAGE DEVICE AND IMPEDANCE ELEMENT FORMING A PART OF SAID FIRST SEMICONDUCTOR CIRCUIT MEANS.