Power amplifier
CA 1234939 A · Owner: Nortel Networks Limited · Inventors: Pollard, Brian J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A power amplifier includes negative and positive terminals for connection across a direct current supply an input for, receiving a reference signal and an output for supplying an amplified replica of the reference signal. Positive polarity and negative polarity energy transfer gates are controlled to store electrical energy from the direct current supply, and to subsequently release electrical energy to the output. A control circuit is responsive to the reference signal and a potential amplitude at the output for, controlling which of either or neither of the positive polarity and negative polarity energy gates is active and for controlling each, quantity of …
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 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
- 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.