Timing circuit

Claim 1

A TIME DELAY CIRCUIT FOR ACTUATING A LOAD DEVICE COMPRISING A FIRST BRANCH NETWORK INCLUDING A FIRST FIXED RESISTANCE AND A CONDENSER SERIES CONNECTED, SAID FIRST FIXED RESISTANCE CONSTITUTING A FIRST CHARGING CURRENT PATH FOR SAID CONDENSER, A SECOND BRANCH NETWROK INCLUDING A RESISTIVE IMPEDANCE, MEANS CONNECTING SAID FIRST AND SECOND BRANCH NETWORKS IN PARALLEL ACROSS A SOURCE OF CHARGING CURRENT, A UNI-DIRECTIONAL CURRENT CONDUCTING DEVICE CONNECTED BETWEEN SAID RESISTIVE IMPEDANCE AND SAID CONDENSER AND POLED TO THEREBY FORM WITH SAID RESISTIVE IMPEDANCE A SECOND CHARGING CURRENT PATH FOR SAID CONDENSER, A GATE MONITORING THE CHARGING POTENTIAL OF SAID CONDENSER, SAID GATE BEING ARRANGED TO SWITCH TO AN OPERATIVE CONDITION WHEN SAID CONDENSER REACHES A PREDETERMINED VOLTAGE, A LOAD DEVICE OPERATIVELY CONNECTED TO SAID GATE TO BE ACTUATED WHEN SAID GATE IS OPERATED, WHEREBY SAID SECOND CHARGING CURRENT PATH FOR SAID CONDENSER CARRIES SUBSTANTIALLY ALL OF THE CHARGING CURRENT THEREFOR DURING THE INITIAL PORTION OF THE CHARGE CYCLE, SAID INITIAL PORTION BEING TERMINATED WHEN THE VOLTAGE ACROSS SAID CONDENSER REVERSE BIASES SAID DEVICE SO THAT SAID FIRST CHARGING CURRENT PATH CARRIES ALL OF THE CHARGING CURRENT THEREFOR SUBSEQUENT TO SAID INITIAL PORTION OF SAID CHARGING CYCLE.