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:
Sep. 28, 1999
Filed:
Sep. 29, 1997
Applicant:
Inventors:
Teruhiko Funakura, Hyogo, JP;
Kazuya Fujita, Osaka, JP;
Assignees:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Yamada Den-On Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324765 ; 324763 ; 324720 ;
Abstract
A power supply voltage (Vcc) is applied to a dummy capacitor having a capacitance identical to that of a bypass capacitor to generate an excessive current. The excessive current is subtracted from a current flowing through an IC and the bypass capacitor to obtain a power supply current (Icc) of the IC. The time required for measuring power supply current (Icc) of the IC is reduced since it is not necessary to wait for attenuation of the excessive current of the bypass capacitor.