Electronic control responsive to opposite senses of condition deviation

Claim 1

AN ELECTRONIC CONTROL SYSTEM, COMPRISING LOAD CIRCUIT MEANS INCLUDING A CURRENT-RESPONSIVE LOAD, A SILICON CONTROLLED RECTIFIER MEANS HAVING ANODE AND CATHODE POWER CIRCUIT ELECTRODES AND A GATE ELECTRODE, AND FULL WAVE RECTIFIER MEANS CONNECTED WITH SAID POWER CIRCUIT ELECTRODES AND SAID LOAD FOR ENERGIZING SAID LOAD WITH A PULSATING VOLTAGE UNDER CONTROL OF SAID SILICON CONTROLLED RECTIFIER MEANS, SAID FULL WAVE RECTIFIER MEANS INCLUDING A FIRST WINDING; AND NORMALLY-BALANCED CONDITION-RESPONSIVE NETWORK MEANS CONNECTED WITH SAID GATE ELECTRODE FOR CONTROLLING THE OPERATION OF SAID SILICON CONTROLLED RECTIFIER TO CAUSE THE VOLTAGE APPLIED TO THE LOAD AND THE EFFECTIVE CURRENT SENSED BY THE LOAD TO BE A FUNCTION OF THE SENSE AND MAGNITUDE OF THE DEVIATION OF A CONDITION FROM A PREDETERMINED VALUE, SAID CONDITION-RESPONSIVE NETWORK MEANS INCLUDING A SECOND WINDING, AND MEANS ENERGIZING SAID SECOND WINDING TO HAVING A GIVEN FREQUENCY AND PHASE RELATIONSHIP RELATIVE TO SAID FIRST WINDING WHEREBY DEVIATION OF THE CONDITION IN ONE SENSE APPLIES CORRESPONDING HALF CYCLES OF EACH FULL CYCLE OF THE POWER AND DEVIATION IN AN OPPOSITE SENSE APPLIES THE CORRESPONDING OPPOSITE HALF CYCLES OF EACH FULL CYCLE.