Light triggered thyristor device

Claim 2

A light triggered thyristor device comprising a mean thyristor, an auxiliary thyristor capable of being triggered by a light signal incident on a light receptor area thereof, and an electrically insulating hermetically sealed cylinder case, said case having side walls forming a hole through which a fiber optics cable is introduced into said case, said main thyristor being supported in said case by a pressure contact of exterior anode and cathode electrodes, said auxiliary thyristor being fixed to said walls of said case with the light receptor area thereof placed in registry with an end portion of said fiber optics cable, anode electrodes of both of said thyristors being electrically interconnected, and a gate electrode of the main thyristor and a cathode electrode of the auxiliary thyristor being electrically interconnected.

Claim 3

The device of claim 1 in which the walls of said case are comprised of a ceramic material.

Claim 4

A light triggered semiconductor device comprising, a discrete main thyristor, said discrete main thyristor having an anode electrode, a cathode electrode and a gate electrode affixed to predetermined areas of said main thyristor, a discrete auxiliary thyristor, said auxiliary thyristor having an anode electrode and a cathode electrode affixed to predetermined areas of said auxiliary thyristor, a hermetically sealed case member, said case member having a cylindrical shape, side walls of said cylindrical case being comprised of an electrically insulating material, end members of said case being comprised of an electrically conductive metal, said main thyristor disposed within said case, said main thyristor being spaced apart from the said side walls of said case by an electrically insulating guide ring, one end member of said case member being in ohmic electrical contact with the cathode electrode of said main thyristor, said end members serving as anode and cathode contacts of said light triggered semiconductor device, the side walls of said case having a hole therein, said hole extending entirely through said wall, said auxiliary thyristor affixed to said wall of said case within said case, said auxiliary thyristor having a light receptor area being disposed over said hole in said wall, a fiber optic cable disposed within said hole, one end of said fiber optic cable in registry with said light receptor area of said auxiliary thyristor, another end of said fiber optic cable extending outside of said case adapted to receive a light signal, the anode electrodes of said main and said auxiliary thyristors being electrically ohmically connected within said case and the gate electrode of said main thyristor and the cathode electrode of said auxiliary thyristor being electrically ohmically connected within said case.

Claim 5

A light triggered semiconductor device comprising, a discrete main thyristor, said discrete main thyristor having an anode electrode, a cathode electrode and a gate electrode affixed to predetermined areas of said main thyristor, a discrete auxiliary thyristor, said auxiliary thyristor having an anode electrode and a cathode electrode affixed to predetermined areas of said auxiliary thyristor, a hermetically sealed case member, said case member having a cylindrical shape, side walls of said cylindrical case being comprised of an electrically insulating material, end members of said case being comprised of an electrically conductive metal, said main thyristor disposed within said case, said main thyristor being spaced apart from the said side walls of said case by an electrically insulating guide ring, one end member of said case member being in ohmic electrical contact with the cathode electrode of said main thyristor, said end members serving as anode and cathode contacts of said light triggered semiconductor device, the side walls of said case having a hole therein, said hole extending entirely through said wall, said auxiliary thyristor affixed to said wall of said case within said case, said auxiliary thyristor having a light receptor area being disposed over said hole in said wall, a fiber optic cable disposed within said hole, one end of said fiber optic cable in registry with said light receptor area of said auxiliary thyristor, another end of said fiber optic cable extending outside of said case adapted to receive a light signal, the anode electrodes of said main and said auxiliary thyristors being electrically ohmically connected within said case and the gate electrode of said main thyristor and the cathode electrode of said auxiliary thyristor being electrically ohmically connected within said case.