Disk device and removable magnetic disk device with electrically

Details Disk device and removable magnetic disk device with electrically Disk device and removable magnetic disk device with electrically

1998-08-19

2000-06-20

Cao, Allen T.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 5012

Patent

active

060784652

ABSTRACT:
The electric circuit 108 is electrically separated into two portions, a first electric circuit portion 109 and a second electric circuit portion 110 which processes a small analog signal. The ground 126 of the first electric circuit portion can be connected to the ground 125 of the host unit. The ground and power supply lines of the amplifier 107 in the assembly 102 are connected directly to those of the second electric circuit portion, respectively. An optical data and signals transmitting/receiving member, such as a photocoupler 114, transmits and receives data and signals between the first electric circuit portion and the second electric circuit portion and is provided between both these portions. An enclosure 101 encloses and shields electro-magnetically the whole device with an electric conductor. A conductive connecting member 123 is provided between the electric conductor of the enclosure and the ground 124 of the host unit.

REFERENCES:
patent: 5936798 (1999-08-01), Johnson et al.
patent: 5966267 (1999-10-01), Hooley et al.
"International Standard--Electromagnetic Compatibility for Industrial-Process Measurement and Control Equipment", IEC 801-2, 1994-04, pp. 7-9, 15-17 and 25-28.
Maxim Publication "Analog Design Guide", 9th Edition.

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