Thyristor housing assembly

Claim 2

A thyristor with a disc-shaped housing comprising an insulating ring, two metal cover plates connected in gas tight fashion to said ring, a semiconductor element having an ignition electrode, a control line having one end passing into an opening in said housing, and its other end resting on said ignition electrode, a metal plate arranged between one of the cover plates and said semiconductor element, said metal plate having a recess for the other end of said control line, one of the metal housing components having a slot therein in which is arranged at least a part of the control line, in said slot opening into said recess, said recess being provided with an abutment on said metal plate facing said semiconductor element, the end of the control line which rests on said ignition electrode being designed as a coil spring Disposed in compression against said igniton electrode and against said abutment, and means for clamping said control line inclcuding said spring to said metal plate including an elastic insulating ring having an outer surface in engagement with the surface of said recess and an inner surface embracing said spring, and an insulating cap between said spring and said abutment.

Claim 3

A thyristor with a discshaped housing as set forth in claim 1, in which said slot lies on the side of said metal plate which faces away from said semiconductor element.

Claim 4

A disc-shaped gas tight thyristor housing assembly comprising an insulating ring-shaped wall, a conductive socket extending in gas tight relation through said ring-shaped wall, said socket being closed at its outer end and being open at its inner end, top and bottom disc-shaped end plates, a pair of mounting flanges secured respectively to said end plates and to said ring-shaped wall, an intermediate metal plate below said upper end plate and in electrical contact therewith, a thyristor having anode, cathode and ignition electrodes between said intermediate plate and the lower of said end plates, said intermediate plate having a centrally located cavity in its lower surface, said intermediate plate having a slot in its upper surface extending radially inwardly from its outer edge to a point beyond said cavity and in communication therewith, said intermediate plate providing electrical contact with said cathode electrode, said lower end plate having electrical contact with said anode electrode, a control line extending radially inwardly through said ring-shaped wall, along the length of said slot to a point within said cavity, an insulating tube surrounding said control line where said control line is located in said slot, an insulating ring lining said cavity, the inner end of said control line terminated in a downwardly extending coil of springy electrical conductive material into contact with said ignition electrode and embraced by said insulating ring an insulating cap closing the inner end of said cavity and against which the upper end of said coil abuts compressing said coil against said ignition electrode within said cavity, and said control line extending into said socket and in pressure contact therewith.

Claim 5

A disc-shaped gas tight thyristor housing assembly comprising an insulating ring-shaped wall, a conductive socket extending in gas tight relation through said ring-shaped wall, said socket being closed at its outer end and being open at its inner end, top and bottom disc-shaped end plates, a pair of mounting flanges secured respectively to said end plates and to said ring-shaped wall, an intermediate metal plate below said upper end plate and in electrical contact therewith, a thyristor having anode, cathode and ignition electrodes between said intermediate plate and the lower of said end plates, said intermediate plate having a centrally located cavity in its lower surface, said intermediate plate having a slot in its upper surface extending radially inwardly from its outer edge to a point beyond said cavity and in communication therewith, said intermediate plate providing electrical contact with said cathode electrode, said lower end plate having electrical contact with said anode electrode, a control line extending radially inwardly through said ring-shaped wall, along the length of said slot to a point within said cavity, an insulating tube surrounding said control line where said control line is located in said slot, an insulating ring lining said cavity, the inner end of said control line terminated in a downwardly extending coil of springy electrical conductive material into contact with said ignition electrode and embraced by said insulating ring an insulating cap closing the inner end of said cavity and against which the upper end of said coil abuts compressing said coil against said ignition electrode within said cavity, and said control line extending into said socket and in pressure contact therewith.