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:
Jul. 09, 1996
Filed:
Feb. 24, 1994
Toru Kishi, Yamatokoriyama, JP;
Kazuyuki Takada, Hirakata, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An output circuit of a PWM inverter for PWM controlling a coil voltage of a motor includes an N channel power element, a P channel power element, a current control circuit having a current output terminal, and a second current control circuit having a current input terminal. A current flowing out from the current output terminal of the first current control circuit and a current flowing in from the current input terminal of the second current control circuit are subjected to particular control to thereby control the N channel power element and the P channel power element. The output circuit of the PWM inverter is configured inexpensively to control a voltage of a motor winding terminal with very small error and with low power consumption.