Multi-reference, high-accuracy switching amplifier
CA 2349181 A1 · Owner: Kirn, Larry · Inventors: Kirn, Larry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A switching amplifier employs a plurality of independent output stages in a bridged configuration, with each output stage presenting the product of an independent duty cycle and two or more static of dynamic reference voltages currents or powers to a single terminal of a common output load. A plurality of electrically controlled switches (207 208, 209, 210, 211, 212) , interconnect the references to the load (218) with a waveform generator (220) , controlling the switches for a coarse and fine control of power to the load. The waveform generator preferably uses pulse-code modulation (PCM) though the , invention is not limited in this regard and is applicable to any modulation , scheme …
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 November 12, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 12, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2021.
- 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.