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:
May. 28, 1996
Filed:
Oct. 19, 1994
Kazuomi Hatanaka, Ikoma, JP;
Sharp Kabushiki Kaisha, , JP;
Abstract
A multiplier circuit including a first voltage supply for supplying a first voltage; a second voltage supply for supplying a second voltage; and a control section having a first terminal through which an input current flows, a second terminal through which a current equal to or a constant multiple of the input current at the first terminal flows, the first voltage being supplied to the second terminal, a third terminal through which an output current flows, and a fourth terminal through which a current equal to or a constant multiple of the output current at the third terminal. The second voltage is applied to the fourth terminal. The control section controls the output current so that a logarithm of a ratio of an absolute value of the output current to an absolute value of the input current is in proportion to a difference between the first voltage and the second voltage.