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. 10, 1981
Filed:
Jul. 05, 1979
Katsutaro Iwaki, Chiryu, JP;
Kazumasa Mori, Aichi, JP;
Akira Mase, Handa, JP;
Takayasu Nimura, Nagoya, JP;
Katsumi Itoh, Oobu, JP;
Yoshio Akita, Ichinomiya, JP;
Katsuya Muto, Kariya, JP;
Taro Asahi, Chiryu, JP;
Keiichiro Banzai, Toyota, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A semi-conductor voltage regulation system for a vehicle includes engine rise-up detection circuit and an oscillator circuit. The field exciting current is intermittently supplied by the oscillator circuit before the engine starts and continuously supplied after the engine has started so as to minimize battery discharge. The engine rise-up detection circuit changes its input impedance in accordance with the voltage applied thereto, whereby a highly reliable regulator with less heat generation may be obtained.