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. 21, 1989
Filed:
Apr. 27, 1988
Applicant:
Inventors:
Assignee:
Trilux-Lenze GmbH & Co. KG, Arnsberg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323271 ; 323222 ; 323285 ; 363 89 ;
Abstract
A d.c. supply circuit containing a series-circuit composed of a switch and an inductor. A regulator circuit is provided to alternatingly drive the switch into conductive and nonconductive states. The control is performed by the inductor and responsive to current (i.sub.L). The series-circuit also includes an auxiliary switch, to which is connected, in parallel, a series-circuit formed by a diode and a capacitor. In short periods, in which the switch is conductive while the auxiliary switch is nonconductive, the capacitor is charged in order to generate the supply voltage for the regulator circuit.