Patent ID: 7449841

Claim:
A high voltage switch circuit for coupling current from a first switch terminal to a second switch terminal comprising: a first junction transistor having a collector terminal associated with the first switch terminal, a base terminal associated with the second switch terminal, and an emitter terminal; a first diode having a first terminal coupled to the emitter terminal of said first junction transistor and a second terminal coupled to the base terminal of said first junction transistor, said first diode arranged to enable a unidirectional path for current flow between said first switch terminal and said second switch terminal via said first junction transistor in the event of a forward bias current between said base terminal and said emitter terminal of said first junction transistor; and a controllable alternating current signal source exhibiting an active mode and a inactive mode coupled to said first junction transistor and arranged in said active mode to alternatingly develop said forward bias current and a reverse bias between said base terminal of said first junction transistor and said emitter terminal of said first junction transistor.