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. 17, 2014
Filed:
Jun. 28, 2012
Applicants:
Youichirou Suzuki, Okazaki, JP;
Yasuhiro Fukagawa, Obu, JP;
Takeshi Nakamura, Nagoya, JP;
Inventors:
Assignees:
DENSO CORPORATION, Kariya, JP;
Nippon Soken, Inc., Nishio, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A slew rate regulation circuit varies a slew rate of a waveform of a voltage outputted to a DC motor through a N-channel MOSFET. The slew rate regulation circuit lowers a peak level by dispersing frequency components of switching noise, which develops in a frequency range higher than a frequency range determined by a carrier frequency.