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. 23, 2004
Filed:
Sep. 11, 2002
Applicant:
Inventors:
Stefan Schmitt, Furth, DE;
Roland Bittner, Nurnberg, DE;
Assignee:
Semikron Elektronik GmbH, Nuremburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/40 ;
U.S. Cl.
CPC ...
G05F 1/40 ;
Abstract
A voltage-regulating circuit uses a combination of a longitudinal regulator circuit with a switched charge-pumping circuit. The longitudinal regulator circuit contains a transistor, a first resistor, and a zener diode. The charge-pumping circuit has a second resistor, a capacitor and a switched voltage source lying in series between the output potential of the voltage-regulating circuit and a chassis ground potential. The anode of a diode is connected to a point between the second resistor and the capacitor, while the cathode of the diode is connected to the controlling signal input of the transistor.