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:
Sep. 02, 1986
Filed:
Jul. 25, 1984
Applicant:
Inventor:
Toru Suzuki, Tokyo, JP;
Assignee:
Tokyo Kogaku Kikai Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
3152 / ; 315240 ; 354416 ;
Abstract
An electronic flash including a discharge flash tube controlled by a first switch and a commutation capacitor for controlling the first switch. There is provided a second switch for governing the operation of the commutation switch. A charging circuit is provided for charging the commutation capacitor and includes a resistor connecting the commutation capacitor with an electric power source. The resistor has a resistance value which is small enough to allow a current not smaller than a current at which the second switch is turned off.