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, 1999
Filed:
Nov. 26, 1997
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A vehicle generator controller comprises a voltage detection circuit for outputting a voltage detection signal D to regulate a generated voltage VG in accordance with a battery voltage VB, a gradual increase control circuit for outputting a gradual increase control signal E in response to the voltage detection signal D and a switching element for intermittently controlling a field voltage in response to the gradual increase control signal E, the gradual increase control circuit includes a smoothing circuit for smoothing the voltage detection signal D by a charging time constant and a discharging time constant and a comparator for outputting the gradual increase control signal E by comparing the smoothing signal with a triangle voltage, both the charging time constant and the discharging time constant of the smoothing circuit are set to one second or more and the gradual increase control signal E moves to a waveform for gradually decreasing the field voltage when the battery voltage increases. With this arrangement, the vehicle generator controller suppresses a torque shock when an electric load is turned on as well as suppresses the drop of a battery voltage when the electric load is repeatedly turned on.