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:
Nov. 17, 1992
Filed:
Dec. 10, 1991
Yasushi Nishimura, Tokyo, JP;
Pioneer Electronic Corporation, Tokyo, JP;
Abstract
A voltage-current conversion circuit comprises a transistor (Q1) on the input side whose emitter is employed as the input terminal (IN), and a transistor (Q2) on the output side whose base is connected to the base of the transistor (Q1), and the collector current and the emitter current of the transistor (Q1) on the input side are made equal to the collector current of the transistor (Q2) on the output side with the aid of current mirrors circuits (1 and 2). Hence, the transistors on the input and output sides are equal in base-emitter voltage to each other, and the non-linear distortion is therefore eliminated. In addition, the inflow or outflow of current from the input voltage source is zeroed, so that a high input impedance is obtained.