Current mode controller for continuous conduction mode power factor correction circuit and method of operation thereof
CA 2244044 C · Owner: Lucent Technologies Inc. · Inventors: Farrington, Richard William; Gardiner, William Phillip; Jacobs, Mark Elliott
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For use with a power factor correction circuit a, current mode controller, a method of operating current mode control to achieve power factor correction thereof and a power supply incorporating the controller or the method. In one embodiment, the controller includes: (1) a modulator coupled to a switch in the power factor correction circuit that senses an electrical characteristic and a current passing through the power factor correction circuit and provides, in response thereto, a control signal to the switch and (2) a compensation circuit, coupled to an input of the power factor correction circuit that provides a, compensation signal to the modulator that is a function of a rectified line …
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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
- Filed July 28, 1998 and granted June 5, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2020.
- 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.