Temperature control electric circuit

Claim 1

A TEMPERATURE CONTROLLER COMPRISING, A BRIDGE SENSING CIRCUIT HAVING A PLURALITY OF RESISTANCE ELEMENTS HAVING THE ENDS THEREOF CONNECTED AT A PAIR OF INPUT JUNCTIONS AND A PAIR OF OUTPUT JUNCTIONS, ONE OF SAID RESISTANCES SERVING AS A HEATING ELEMENT WITH A POSITIVE TEMPERATURE COEFFICIENT OF RESISTANCE, POWER CIRCUIT MEANS INCLUDING SAID ONE OF SAID RESISTANCES SERVING AS A HEATING ELEMENT AND SEMICONDUCTOR MEANS CONNECTED ACROSS ONE OF SAID INPUT AND ONE OF SAID OUTPUT JUNCTIONS FOR DIRECTLY SUPPLYING POWER THROUGH SAID ONE OF SAID RESISTANCES SERVING AS A HEATING ELEMENT TO THE OTHER OF SAID INPUT JUNCTIONS, SAID PLURALITY OF RESISTANCES OF SAID BRIDGE CIRCUIT PRODUCING AN OUTPUT SIGNAL CORRESPONDING TO THE RESISTANCE CHANGE OF SAID ONE OF SAID RESISTANCES SERVING AS A HEATING ELEMENT, SAID SEMICONDUCTOR MEANS BEING RESPONSIVE TO SAID OUTPUT SIGNAL FOR VARYING THE ENERGIZATION OF SAID ONE OF SAID RESISTANCES SERVING AS A HEATING ELEMENT THROUGH SAID POWER CIRCUIT MEANS IN RESPONSE TO CHANGE IN THE TEMPERATURE OF SAID ONE OF SAID RESISTANCES SERVING AS A HEATING ELEMENT.