Anti-zero biasing clamp
CA 1298401 C · Owner: Sendelweck, Gene K. · Inventors: Sendelweck, Gene K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
RCA 84,915, ABSTRACT, A diode clamp in a kine driver circuit clamps the voltage at the grid (G1) element of a picture tube to a level derived from the voltage at the cathode element of the picture tube. Deriving the grid (G1) voltage from the cathode voltage ensures that if the kine driver amplifier saturates, the voltage applied to the grid (G1) will always be less than that applied to the cathode. Thus excessive, beam current is prevented from flowing immediately following cold cathode turn-on, which excessive beam current would otherwise cause a phenomenon known as "focus flutter".
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 March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
- 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.