High gain, current mode preamplifier

Details High gain, current mode preamplifier High gain, current mode preamplifier

1981-01-23

1983-05-31

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 67, 360 68, G11B 509, G11B 502

Patent

active

043863787

ABSTRACT:
A high gain, current mode preamplifier for magnetic media recording and reproduction wherein a differential amplifier has its non-inverting input connected to the circuit ground through a first resistance, its inverting input is connected to the circuit ground through a second resistance, and its output is connected to the inverting input through a third resistance, and with the magnetic head being selectively connected in parallel with the third resistance during recording and across the amplifier input terminals during playback.

REFERENCES:
patent: 4053936 (1977-10-01), Foust
patent: 4081845 (1978-03-01), Braitberg
patent: 4157574 (1979-06-01), Stamer
patent: 4271439 (1981-06-01), Wray
patent: 4317142 (1982-02-01), Wray

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