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:
Feb. 25, 2003
Filed:
Jul. 23, 2001
Applicant:
Inventor:
Klaus Peter Crone, Hennef, DE;
Assignee:
Agfa-Gevaert, , BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 1/505 ;
U.S. Cl.
CPC ...
G03B 1/505 ;
Abstract
The circuit for a photographic flash having the usual components of a switching element, transformer, rectifier, flash capacitor, trigger device and flash tube presents very good value in respect of the charging speed of the flash capacitor charging and the reliability of cutoff of said charging operation upon attainment of the desired voltage if, instead of an active component for limiting the charge of the flash capacitor, exclusively one or more suitably dimensioned passive components are integrated in the circuit.