Multivibrator circuits having a wide range of control

Claim 1

IN COMBINATION, A PAIR OF SWITCHES EACH HAVING AN INPUT CIRCUIT AND AN OUTPUT CIRCUIT; MEANS FOR NORMALLY BIASING A FIRST OF SAID SWITCHES IN A SELECTED CONDUCTION STATE OF TWO POSSIBLE CONDUCTION STATES OF SUBSTANTIALLY FULL CONDUCTION AND NO CONDUCTION; MEANS FOR NORMALLY BIASING THE SECOND OF SAID SWITCHES IN A SELECTED CONDUCTION STATE OF TWO POSSIBLE CONDUCTION STATES OF SUBSTANTIALLY FULL CONDUCTION AND NO CONDUCTION; COUPLING MEANS FOR MAKING THE SECOND SWITCH INITIALLY RESPONSIVE TO THE CONDUCTION STATE OF THE FIRST SWITCH TO CHANGE THE CONDUCTION STATE OF SAID SECOND SWITCH; SAID COUPLING MEANS COMPRISING A FIRST RESISTOR CONNECTED BETWEEN THE OUTPUT CIRCUIT OF SAID FIRST SWITCH AND GROUND REFERENCE, A VOLTAGE SOURCE, A VARIABLE RESISTOR HAVING A FIRST FIXED TERMINAL, A SECOND FIXED TERMINAL, AND A VARIABLE TERMINAL, MEANS FOR COUPLING THE VARIABLE TERMINAL TO SAID SOURCE, A CAPACITOR CONNECTED BETWEEN THE OUTPUT CIRCUIT OF SAID FIRST SWITCH AND THE INPUT CIRCUIT OF SAID SECOND SWITCH, A SECOND RESISTOR CONNECTED BETWEEN THE OUTPUT CIRCUIT OF SAID FIRST SWITCH AND THE FIRST FIXED TERMINAL OF SAID VARIABLE RESISTOR, AND A THIRD RESISTOR CONNECTED BETWEEN THE INPUT CIRCUIT OF SAID SECOND SWITCH AND THE SECOND FIXED TERMINAL OF SAID VARIABLE RESISTOR, AND MEANS FOR APPLYING VOLTAGE IMPULSES TO SAID FIRST SWITCH TO REVERSE THE CONDUCTION STATE OF SAID FIRST SWITCH.