Cmos schmitt trigger
CA 1214226 A · Owner: British Telecommunications Public Limited Company · Inventors: Mcgrail, Joseph M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Schmitt trigger using only six FETs comprises a first p-channel MOSFET whose drain is connected to a ground rail and a first n-channel MOSFET whose drain is connected to a voltage supply rail positive with respect to the ground rail, whose gates are connected to a common input, and whose sources are connected together. A second p-channel MOSFET has its source connected to the voltage supply rail, and its gate connected to the source of the first p-channel MOSFET, and a second n-channel MOSFET has its source connected to the ground rail whose gate is, connected to the gate of the second p-channel MOSFET and its drain connected to the drain of the second p-channel MOSFET to form a common …
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 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 2003.
- 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.