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. 22, 1986
Filed:
Jun. 18, 1984
Yoshiyuki Iwaki, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A charge display circuit for indicating the charging state of an automotive electrical system in which the brightness of the charge display lamp is increased while reducing the average power consumption of the circuit. A rectifier circuit having first and second DC output terminals and an AC input terminal is connected to the output winding assembly of an AC generator with the first DC output terminal connected to one terminal of the battery to charge the battery. A charge display lamp is connected through a key switch between the second DC output terminal and the charging terminal of the battery. A resistor having a positive temperature coefficient is connected between the connecting point of the charge display lamp and second DC output terminal and a ground terminal. The resistor may be implemented as a plurality of resistors having positive temperature coefficients connected in parallel with one another, or as a fixed resistor connected in parallel with a resistor having a positive temperature coefficient.