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:
Sep. 09, 1980
Filed:
Jan. 26, 1979
Applicant:
Inventor:
Wolfgang Kofink, Aichwald, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
322 60 ; 322 81 ;
Abstract
In known generators and motors a regulator circuit connected in series with the exciter winding creates too much resistance to allow self-excitation to start at very low speeds. The regulator circuit is therefore shunted by a positive temperature coefficient resistor. This has very low resistance at low temperatures causing sufficient current flow through the exciter winding even at low speeds.