Feedback amplifier
CA 1207850 A · Owner: Fujitsu Limited · Inventors: Takeda, Yukio; Daido, Yoshimasa; Shigaki, Masafumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A feedback amplifier circuit includes an inversion circuit, a level shift circuit, and a feedback resistive element. The inversion circuit includes an input active element and a load element connected in cascade with respect to an electric source. The level shift circuit includes a field effect transistor having a gate connected to the output of the inversion circuit a diode or, diodes, a constant current active load connected in cascade with respect to the electric source and the, feedback resistive element is connected between the output of the level shift circuit and the input of the inversion circuit.
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
- Granted July 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 2003.
- 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.