Constant current supply
CA 1067575 A · Owner: Rca Corporation · Inventors: Rosenthal, Bruce D.; Dingwall, Andrew G.F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A first field-effect transistorized constant current supply provides a first relatively constant output current. A second field-effect transistorized constant current supply is cascaded with, and driven by, said first current to provide a more highly regulated second constant output current. The system is self-starting and latch free. The second output current may be employed to drive a current mirror with a plurality of output current paths.
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 December 4, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 4, 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.