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:
Mar. 12, 1991
Filed:
Dec. 06, 1989
Applicant:
Inventor:
Willi Kuehn, Markgroeningen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
323222 ; 363 19 ;
Abstract
A DC voltage transformer with an inductance fed by a primary voltage and an oscillator stage switching the inductance for the generation of a secondary voltage. For reliable operation it is provided that the oscillating current flowing through the inductance is detected and automatically limited by the oscillator stage to a presettable value.