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:
Oct. 30, 1990
Filed:
Jul. 14, 1989
William J Roberts, Toledo, OH (US);
Prestolite Electric Incorporated, Toledo, OH (US);
Abstract
A capacitor-discharge ignition system discharges a load capacitor to drive an ignition coil for producing an ignition spark. The ignition system includes an oscillator generating complimentary pulse trains that activate a pair of power FETs to drive a transformer. The transformer generates an output voltage that is doubled in magnitude and stored in the load capacitor until the load capacitor is triggered by a trigger circuit to provide an ignition spark. A signal generated by a feedback circuit in response to the occurrence of an ignition spark is employed to inhibit further discharge of the load capacitor as well as to deactivate the transformer. An auxiliary D.C.-to-D.C. converter driven by the oscillator provides a supply voltage for the components of the ignition system.