Power driver control circuit for servo actuator
CA 1136735 A · Owner: Sperry Corporation · Inventors: Lee, Patrick S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power driver control circuit provides control signals for switching transistors in a power driver for an electromagnetic actuator of the type used for controlling a servo head in a closed loop servo system. The control circuit includes variable time delay circuits connected to threshold detectors so that dead zones can be created when the servo error signal changes polarity thereby isolating the switches and preventing switch burn-out.
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.