Output amplifier with non-linear negative feedback
CA 1135802 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Stoker, Albert; Van Den Bungelaar, Martinus J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit arrangement provided with two amplifiers having a common input and being operated in push-pull and with a load impedance being connected between their output, is protected against short-circuiting either one of the outputs of the two amplifiers. To that purpose a first d.c. passing circuit is included between the output of the one amplifier and a d.c.-bias point of the other amplifier and a second d.c. passing circuit is included between the output of the other amplifier and a d.c.-bias point of the one amplifier. Not only the two amplifiers but also the load is protected in this way against short-circuiting.
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 November 16, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 16, 1999.
- 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.