Monostable multivibrator using emitter-follower feedback timing circuit

Claim 1

A PULSE-FORMING NETWORK COMPRISING, IN COMBINATION, FIRST, SECOND AND THIRD TRANSISTORS EACH HAVING BASE, EMITTER AND COLLECTOR ELECTRODES, MEANS CONNECTING THE EMITTER ELECTRODES OF SAID FIRST AND SECOND TRANSISTORS TO A SOURCE OF REFERENCE POTENTIAL, MEANS INCLUDING A PARALLEL COMBINATION OF A RESISTOR AND A CAPACITOR CONNECTED BETWEEN THE COLLECTOR OF SAID FIRST TRANSISTOR AND THE BASE OF SAID SECOND TRANSISTOR INTERCONNECTING SAID FIRST AND SECOND TRANSISTORS AS A MONOSTABLE MULTIVIBRATOR, A SOURCE OF DIRECT CURRENT VOLTAGE OF CONTROLLABLE MAGNITUDE CONNECTED TO THE COLLECTOR OF SAID THIRD TRANSISTOR, MEANS COUPLING THE COLLECTOR OF SAID SECOND TRANSISTOR TO THE BASE OF SAID THIRD TRANSISTOR, AND A FEEDBACK PATH INCLUDING A CAPACITOR CONNECTED BETWEEN THE EMITTER OF SAID THIRD TRANSISTOR AND THE BASE OF SAID FIRST TRANSISTOR.