Power supply circuit
CA 1259373 A · Owner: Plagge, Joseph A.M. · Inventors: Plagge, Joseph A.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Power supply circuit". For charging a battery (6) a self-oscillating power supply circuit is used in which energy is stored in a transformer (Tr) during the so-called forward intervals which energy is applied in the form of a charge current to the battery (6) during the so-called flyback intervals. To prevent overcharge of the battery (6) the circuit is, provided with an accumulator voltage protection circuit (10) receiving its power supply from the battery (6) to, which circuit a fraction of the battery voltage is applied by means of a voltage divider (R3,R4) which is arranged across the battery (6) by means of a switch (S1) during the flyback intervals. To prevent the voltage drop across …
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 September 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 12, 2006.
- 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.