Self-regulating direct current power supply

Claim 1

IN A POWER SUPPLY HAVING FIRST, SECOND AND THIRD GATED RECTIFIERS FOR THE RECTIFICATION OF RESPECTIVE PHASES OF A THREE PHASE PRIMARY POWER SOURCE, EACH OF SAID RECTIFIERS CONDUCTING DURING EACH ALTERNATION PERIOD OF SAID SOURCE FOR AN INTERVAL DETERMINED BY THE OCCURRENCE OF A RESPECTIVE ONE OF GATING PULSES, APPARATUS COMPRISING MEANS FOR PRODUCING SAID GATING PULSES INCLUDING FIRST, SECOND AND THIRD GATED RELAXATION OSCILLATORS CONNECTED IN CASCADE, SAID FIRST OSCILLATOR HAVING A VARIABLE FREE-RUNNING FREQUENCY AND PRODUCING A SINGLE OUTPUT PULSE AT A VARIABLE TIME SUBSEQUENT TO THE OCCURRENCE OF EACH INPUT PULSE APPLIED THERETO, EACH OF SAID SECOND AND THIRD OSCILLATORS HAVING A CONSTANT FREE-RUNNING FREQUENCY AND PRODUCING A SINGLE OUTPUT PULSE AT A FIXED TIME SUBSEQUENT TO THE OCCURRENCE OF EACH INPUT PULSE RESPECTIVELY APPLIED THERETO, MEANS COUPLED TO ONE PHASE OF SAID SOURCE FOR PRODUCING A PULSE SIGNAL SYNCHRONOUS THEREWITH, SAID SIGNAL BEING APPLIED TO SAID FIRST OSCILLATOR, THE OUTPUT PULSE OF SAID FIRST, SECOND AND THIRD OSCILLATORS BEING APPLIED AS SAID GATING PULSES TO RESPECTIVE ONES OF SAID RECTIFIERS, AND MEANS FOR VARYING THE FREE-RUNNING FREQUENCY OF SAID FIRST OSCILLATOR TO VARY THE TIME OF OCCURRENCE OF THE OUTPUT PULSE PRODUCED THEREBY.