Transistorized gating circuit for controlled rectifiers

Claim 1

A VOLTAGE REGULATING CIRCUIT FOR AN A.C. GENERATOR HAVING AN ARMATURE AND A FIELD WINDING, SAID VOLTAGE REGULATING CIRCUIT COMPRISING, IN COMBINATION, A PAIR OF DIODES HAVING ANODES CONNECTED TO OPPOSITE TERMINALS OF SAID ARMATURE, AND CATHODES COMMONLY CONNECTED TO ONE TERMINAL OF SAID FIELD WINDING; A PAIR OF SILICON CONTROLLE RECITIFIERS HAVING ANODES COMMONLY CONNECTED TO THE OTHER TEMINAL OF SAID FIELD WINDING AND CATHODES EACH CONNECTED TO AN ANODE OF A RESPECTIVE DIODE; A PAIR OF TRANSISTOR AMPLIFIERS EACH ASSOCIATED WITH A RESPECTIVE RECTIFIER AND HAVING ITS EMITTER-COLLECTOR CIRCUIT CONNECTED IN PARALLEL WITH THE ANODE AND THE GATE OF THE RESPECTIVE RECTIFIER, ACROSS SAID ARMATURE; WHEREBY, WHEN THE RESPECTIVE RECTIFIER IS NOT CONDUCTING THE POTENTIAL THEREACROSS WILL APPEAR ACROSS THE EMITTER-COLLECTOR CIRCUIT OF THE ASSOCIATED TRANSISTOR; MEANSD OPERABLE TO APPLY A CONTROL POTENTIAL, CORRESPONDING TO THE ARMATURE VOLTAGE, ACROSS THE EMITTER-BASE JUNCTIONS OF SAID TRANSISTORS TO VARY THE EFFECTIVE RESISTANVES OF THE EMITTER-COLLECTOR CIRCUITS THEREOF; AND A PAIR OF CAPACITORS EACH CONNECTED ACROSS THE EMITTER- BASE CIRCUIT OF A RESPECTIVE TRANSISTOR; WHEREBY TO CONTROL THE TIME, DURING EACH HALF CYCLE, AT WHICH A RECTIFIRE BECOMES CONDUCTIVE TO SUPPLY CURRENT THROUGH SAID FIELD WINDING.