Flyback power supply
CA 1283166 C · Owner: Motorola, Inc. · Inventors: Peterson, Gregory Alan; Loda, Michael Anthony; Graff, Timothy Eugene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flyback power supply (10) is disclosed which includes a sample and hold feedback path. A pulse width modulation circuit (23) provides control signals for a drive device (20) that determines current excitation pulses for a primary winding (17) of a transformer (16). A secondary winding (19) of the transformer is connected to a rectifier circuit (21, 22) and provides a DC voltage signal at an output terminal (12). A selective feedback path (40 - 49) is provided between the output terminal and a sense input terminal (24) of the pulse width modulation circuit. The selective feedback path comprises a sample and hold circuit (40) which provides for effectively coupling the output terminal to …
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 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2008.
- 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.