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:
Dec. 07, 1982
Filed:
Jul. 08, 1981
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A voltage regulator of a generator for vehicles includes an excitation control circuit for controlling the initial excitation of the generator and the full excitation succeeding to the initial excitation. The excitation control circuit also includes an indication lamp for indicating whether the generator is in a generating state or not. A generator output detecting circuit has a single input terminal to receive an output voltage developed in a stator winding of the generator and compares the output voltage respectively with a first reference level corresponding to an initial voltage build-up and a second reference level higher than the first reference level. An on-off control signal producing circuit produces an on-off control signal having a predetermined duty ratio and delivers the on-off control signal to the excitation control circuit until the output voltage of the generator reaches the first reference level, that is, during the initial excitation stage, thereby to excite the field winding intermittently with the predetermined duty ratio. When the output voltage of the generator reaches the second reference level, the indication lamp is extinguished to indicate that the generator is now in the generating state.