Zero voltage switched power supply converter
CA 2307441 A1 · Owner: Alvarez Barcia, Lourdes · Inventors: Alvarez Barcia, Lourdes; Corral Blanco, Juan Antonio; Rascon Martinez, Miguel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Zero voltage switched power supply converter comprising a series combination of a first winding (11-3) and a first switching element (11-4). A second winding is connected to a second switching element (11-8) and to a storage capacitor (11-9), and a series combination of a second storage capacitor (11-8-1) and a third switching element (11-8-2) is connected in parallel with said second switching element (11-8) so that when the second, switching element (11-8) becomes non-conducting the third switching, element (11-8-2) continues in the conduction state starting a first resonance, period that concludes when the third switching element (11-8-2) becomes non-conducting and starts a second free …
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
- Filed May 2, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2022.
- 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.