PREAMPLIFIER - AMERICAN OPTICAL CORP

Title:

PREAMPLIFIER

Document Type and Number:

Japanese Patent JPS566509

Kind Code:

A

Abstract:

The preamplifier comprises amplifying means, the output of which is inverted relative to the input, and a feedback circuit connected from the output to the input of the amplifier so as to provide a perfect integrator which cancels the amplitude variations resulting from changes in tape speed. The impedance of the feedback circuit and the impedance of the signal source extended to the amplifier are such that the output of the amplifier is the integral of the voltage generated in the inductive head over a wide band of frequencies.

More Like This:

JPS59218016	CONSTANT CURRENT RATIO CIRCUIT
JPS57120130	MONOLITHIC REFERENCE CURRENT SOURCE

Inventors:

TOOMASU KEI NEIRAA
JIYOOJI EI KIYABIGERI

Application Number:

JP7916180A

Publication Date:

January 23, 1981

Filing Date:

June 13, 1980

Export Citation:

Click for automatic bibliography generation Help

Assignee:

AMERICAN OPTICAL CORP

International Classes:

H03F3/34; H03F1/30; H03F3/185; H03G11/08; (IPC1-7): H03F3/04

Next Patent: POWER AMPLIFYING CIRCUIT