Active voltage divider
CA 1189136 A · Owner: Dresser Industries, Inc. · Inventors: Jones, Thaddeus M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An active voltage divider providing output voltage overload protection operably effective in the event failure of the primary resistor should occur. Comprising the divider circuit is a differential amplifier operable as an integrator, a first pair of grounded diodes providing primary overvoltage protection for a first summing junction of the amplifier and a second pair of grounded diodes providing voltage backup protection for a second summing junction of the amplifier.
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 June 18, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2002.
- 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.