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. 03, 1998
Filed:
Dec. 29, 1995
Tsuneaki Endou, Numazu, JP;
Kokusan Denki Co., Ltd., Shizuoka-ken, JP;
Abstract
A power device for an internal combustion engine is disclosed, which includes a rectification power section equipped with a voltage regulator and using an AC magneto driven by the internal combustion engine as a power supply therefor, a switch circuit including at least one MOSFET acting as a switching element and adapted to carry out short circuit between output terminals of the AC magneto, and an FET control circuit for repeatedly subjecting the MOSFET to on-off operation when an output voltage of the rectification power section is at a set level or below and keeping the MOSFET turned off when the output voltage exceeds the set level. The MOSFET is subjected to on-off operation during a low speed operation of the internal combustion engine to boost an output voltage of the AC magneto, to thereby provide a voltage for driving a load. On-off operation of the MOSFET is interrupted when an output voltage of the rectification power section exceeds the set level, so that loss due to switching of the MOSFET is reduced.