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:
Jun. 25, 1996
Filed:
May. 12, 1994
Howard V Bonavia, Groton, NY (US);
Dale F Geislinger, Norwich, NY (US);
Simmonds Precision Engine Systems, Inc., Akron, OH (US);
Abstract
An oscillatory discharge exciter includes an input connectable to a power supply; an output connectable to an igniter; at least two energy storage elements for producing an oscillatory discharge of energy during an exciter discharge period; a unidirectional gated switch and a rectifier coupled in reverse parallel with each other such that the switch and rectifier control, during respective alternating half cycles, oscillatory discharge energy at the exciter output; and a circuit for gating the switch in response to voltage transitions across the switch. The gating circuit can also be used as a snubber circuit to add gate drive to slow devices, as well as to trigger a series of switching devices with the application of only a single external trigger signal to one of the devices. In an alternative embodiment, the gating circuit is replaced with a circuit for maintaining holding current through the switch to prevent the switch from recovering to a blocking condition.