Flyback converter as led driver
CA 2343062 A1 · Owner: Nijhof, Engbert B. G. · Inventors: De Clercq, John E. K. G.; Hontele, Bertrand J. E.; Jacobs, Ronny A. A. M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a circuit arrangement for operating a semiconductor light source, comprising input terminals for connecting a supply voltage input filter means, a converter provided with a switching element having a control circuit, and provided with inductive means and output terminals for , connecting the semiconductor light source. The switching element is periodically driven into conduction for a period ton. According to the invention, the converter is formed by a flyback converter and the inductive , means are formed by a transformer and the control circuit controls the ton.
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 July 3, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 3, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 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.