High tension dc source
CA 1060096 A · Owner: Societe Nationale Elf Aquitaine · Inventors: Gibert, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a current controlled source of high-voltage current fed from a low-voltage current source and supplying a high-voltage direct current to two output terminals an error voltage result-, ing from the comparison of a constant reference voltage with the voltage appearing at the terminals of a resistor supplied with a current proportional to the current to be controlled acts on the amplitude of an alternating current signal produced by an oscillator. The variations in the amplitude of the signal produced by the oscillator in turn cause the high voltage current supplied to said output terminals to vary.
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 August 7, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 7, 1996.
- 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.