Non-isolated dc-dc converters with direct primary to load current
CA 2509003 A1 · Owner: Liu, Yan-Fei · Inventors: Liu, Yan-Fei; Ye, Sheng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
DC-DC converters (301) have high side (305) and rectifier circuits (304) and , output capacitor (Co). High side circuit connects between input voltage and output voltage, and has primary winding and auxiliary section that operate transformer properly. Auxiliary may have switches or combination of switches and capacitors. High side circuit converts electrical into magnetic energy through transformer primary, which is then transferred to output through rectifier circuit. It also transfers energy directly to output voltage. Converters have high efficiency, fast dynamic response and high current output. Converters can have large duty cycle and large input voltage and output voltage …
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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 December 9, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2025.
- 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.