Phase sensitive switching element

Claim 1

A PHASE SENSITIVE SWITCHING ELEMENT FOR CONTROLLING THE PATH OF ELECTRIC CURRENT IN ACCORDANCE WITH THE PHASE OF A GATING SIGNAL RELATIVE TO THE PHASE OF A CONTROLLING ALTERNATING SIGNAL COMPRISING: A FIRST ZONE OF MATERIAL HAVING A FIRST CONDUCTIVITY TYPE, SECOND AND THIRD ZONES OF MATERIAL OF CONDUCTIVITY TYPE OPPOSITE FROM THAT OF SAID FIRST ZONE CONTIGUOUSLY TO THE OUTER SURFACES OF SAID FIRST ZONE, THE CONTIGUOUS PORTIONS FORMING JUNCTIONS BETWEEN EACH OF SAID SECOND AND THIRD ZONES AND SAID FIRST ZONE, FOURTH AND FIFTH ZONES OF MATERIAL HAVING THE SAME CONDUCTIVITY AS SAID FIRST ZONE FORMED ON THE OUTER SURFACE OF SAID SECOND ZONE OF MATERIAL THE CONTIGUOUS PORTIONS FORMING JUNCTIONS BETWEEN SAID FOURTH AND FIFTH ZONES AND SAID SECOND ZONE, SAID FOURTH AND FIFTH ZONE BEING SPATIALLY REMOVED FROM EACH OTHER, CONNECTING MEANS FOR APPLYING A BIASING POTENTIAL TO SAID THIRD ZONE OF MATERIAL, MEANS FOR APPLYING A VARIABLE PHASE SIGNAL TO SAID FIRST ZONE, AND MEANS FOR CONCURRENTLY APPLYING CONTROL SIGNALS OF OPPOSITE PHASE TO SAID FOURTH AND FIFTH ZONES.