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. 10, 1982
Filed:
Sep. 04, 1980
Applicant:
Inventor:
Katsumi Horinishi, Hashimoto, JP;
Assignee:
West Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
3152 / ; 315151 ;
Abstract
In an electronic flash device, in order to control the discharge through a flash lamp for converting the energy stored on a main discharge capacitor into light; that is, in order to control the flash duration, a series circuit consisting of a main switching element, a commutation capacitor for commutating the main switching element after the flash lamp has been lighted and an auxiliary switching element is connected in series to the main discharge capacitor. When the flash lamp is triggered or lighted or when the main switching element is commutated, the commutation capacitor is charged through the series circuit.