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:
Jun. 10, 1986
Filed:
Jun. 08, 1984
Yoshiyuki Iwaki, Himeji, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A charging generator system including a protective circuit which prevents the generator system from overheating when the ambient temperature is extraordinarily high. A protective shorting circuit is coupled between a rectifier output terminal supplying the field coil of the generator and the ground terminal. The protective shorting circuit has a high resistance for normal temperatures and a low resistance for high temperatures, thereby to interrupt the current flow in the field coil when high temperatures occur. In one embodiment, the protective shorting circuit means is implemented with a single thermistor. In another embodiment, a protective transistor is coupled to the field coil, and base current is supplied to the protective transistor when the temperature rises above a predetermined level to thereby shut off the current flow through the field coil under such conditions.