Static switch

Claim 1

IN A STATIC SWITCHING SYSTEM FOR ENERGIZING A LOAD DEVICE, IN COMBINATION: (A) AN A.C. POWER SUPPLY SOURCE; (B) A CONTROLLED RECTIFIER; (C) MEANS COMPRISING RECTIFIER MEANS CONNECTING SAID SOURCE TO SAID CONTROLLED RECTIFIER AND TO SAID LOAD DEVICE WHEREBY SAID CONTROLLED RECTIFIER CONTROLS CURRENT FLOW TO THE LOAD DEVICE; (D) AND MEANS FOR CONTROLLING SAID CONTROLLED RECTIFIER TO RENDER IT CONDUCTING COMPRISING: (E) A FIRST TRANSISTOR AND A SECOND TRANSISTOR; (F) MEANS COMPRISING A D.C. POWER SUPPLY SOURCE AND CIRCUIT MEANS FOR SUPPLYING OPERATING VOLTAGE TO SAID TRANSISTORS AND FOR SUPPLYING CONTROL VOLTAGE TO SAID FIRST TRANSISTORS NORMALLY TO RENDER THE LATTER CONDUCTING; (G) MEANS CONNECTING SAID FIRST TRANSISTOR TO SAID SECOND TRANSISTOR WHEREBY CONDUCTION IN SAID FIRST TRANSISTOR RENDERS SAID SECOND TRANSISTOR NON-CONDUCTING AND NON-CONDUCTION IN SAID FIRST TRANSISTOR RENDERS SAID SECOND TRANSISTOR CONDUCTING;