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. 28, 1976
Filed:
Feb. 05, 1975
Katsumi Itoh, Ohbu, JA;
Kazumasa Mori, Aichi, JA;
Nippondenso Co., Ltd., , JA;
Abstract
A voltage regulating system is used to regulate the output voltage of an alternating current generator which serves to supply electrical loads on a motor vehicle including a battery. The field winding of the generator is supplied with current through the voltage regulating system operating in a switching mode. The voltage regulating system includes a voltage sensing circuit connected with the battery, a control transistor connected with the voltage sensing circuit for effecting ON-OFF of a field current, and a protection circuit having a PNP transistor and a zener diode connected between an output terminal of the generator and the voltage sensing circuit which becomes operable to effect ON-OFF of the field current when the voltage sensing circuit is disconnected from the battery, whereby the output voltage of the generator is regulated at a lower level than that regulated by the voltage sensing circuit during such a disconnection.