Power supply circuit
CA 1136770 A · Owner: Hollandse Signaalapparaten B.V. · Inventors: Ploumen, Hubert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power supply circuit for applying a rapidly varying high voltage to a penetron-type cathode ray tube (1) for a colour display system comprises a first voltage generator (2) for supplying a constant high voltage to the anode (3) and a second voltage generator (4) for supplying a voltage varying in, magnitude with the different colours to the cathode (5). The latter voltage, varying in magnitude with the different colours is modulated with the video signals to be displayed.
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 November 30, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 1999.
- 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.