Light-controllable thyristor
CA 1053354 A · Owner: Siemens Aktiengesellschaft · Inventors: Voss, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a light-controllable thyristor in order to avoid a, small-area ignition in the event of inhomogeneous illumination the photo-current is amplified by means of two auxiliary thyristors, it being ensured that the first auxiliary thyristor does not ignite until the two other systems have ignited. This is achieved by relating the effective emitter edge lengths of main thyristor to second auxiliary thyristor and relating the effective emitter boundary length of the second auxiliary thyristor to the area of the region which is to be exposed.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.