Drive circuit for a magnetic cassette reader with auto reverse a

Details Drive circuit for a magnetic cassette reader with auto reverse a Drive circuit for a magnetic cassette reader with auto reverse a

1993-07-30

1996-04-09

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 61, 360 63, G11B 509, G11B 1512

Patent

active

055067344

ABSTRACT:
A drive circuit having two electronic switches formed from N-MOS transistors is designed to alternatively connect the input of a preamplifier stage to a first or second read sensor on the read head of a magnetic tape. The drive circuit also has a third electronic switch formed from an N-MOS transistor which grounds the input of the preamplifier stage. Based on logic input signals, a control circuit switches the first and second switches, or closes the third switch and simultaneously opens the first and second switches.

REFERENCES:
patent: 3721774 (1973-03-01), Yonemoto et al.
patent: 4847706 (1989-07-01), Jun
patent: 5144502 (1992-09-01), Somers
Microelectronics, 2nd Ed., 1987, McGraw-Hill Book Company, Millman et al., pp. 148-149.
Patent Abstracts of Japan, vol. 16, No. 33 (P01389) Jul. 20, 1992 & JP-A-4098687 (Hitachi Ltd) Mar. 31, 1992.

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