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:
Apr. 18, 1989
Filed:
May. 19, 1988
Applicant:
Inventor:
Minoru Masaki, Saitama, JP;
Assignee:
Jidosha Kiki Co., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02N / ; F02P / ;
U.S. Cl.
CPC ...
1231 / ; 1231 / ; 1231 / ; 1231 / ; 219497 ;
Abstract
An energization control apparatus for a glow plug connected between ground and the emitter of an npn transistor and turning on/off the npn transistor to control an amount of power to be supplied to the glow plug includes a control signal generator (20) for generating a control signal for turning on/off the npn transistor. The control apparatus also includes a base voltage booster, arranged between the control signal generating means the a base of the npn transistor, for boosting a base voltage such that the npn transistor is operated in a saturation region regardless of load variations.