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:
Dec. 01, 1981
Filed:
Dec. 18, 1979
Applicant:
Inventors:
Simon Goede, Wetzikon, CH;
Kurt Fischer, Uster, CH;
Assignee:
Zellweger Uster Limited, Uster, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; H02J / ;
U.S. Cl.
CPC ...
3152 / ; 315311 ; 315240 ; 320-1 ;
Abstract
A process and apparatus for charging a capacitor, particularly for flash guns with a fast flash series, so as to achieve a short charging time while avoiding a high charging current pulse, the charging current during the course of the charging being regulated to a value which at least approaches a constant. The time constant of the charging circuit is altered during the charging process by a controlled resistance arrangement which is controlled in dependence upon the charging voltage of the capacitor.