The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 1978
Filed:
Nov. 01, 1976
Ronald R Brooks, Trenton, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
A constant duration and level of spark is obtained over a wide range of engine speeds in an ignition circuit, including a gate-turn-off device having a main current path connected in series with the primary winding of an ignition coil. An operating voltage is selectively applied, in timed relation to the operation of the internal combustion engine, to an LC resonant circuit for shocking the resonant circuit into oscillation. These oscillations are applied to the gate electrode of the gate-turn-off device, turning the gate-turn-off device off and on each successive half cycle, for inducing a relatively high level spark voltage in the secondary winding of the ignition coil.