Loop-back circuit for testing a magnetic recording system with s

Details Loop-back circuit for testing a magnetic recording system with s Loop-back circuit for testing a magnetic recording system with s

1993-03-15

1995-12-26

O'Shea, Sandra L.

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

360 31, 369 53, G01R 3312, G11B 2018, G11B 2736

Patent

active

054790980

ABSTRACT:
In a magnetic recording system, a loop-back test circuit provides a technique to test a magnetic recording head, a read circuit, and a write circuit to a read-write head, is sensed through the voltage generated at the head by the test current, such that a small voltage portion of the test signal is transferred through a resistor toga read circuit. The voltage portion is then filtered through a capacitor to form detectable peaks such that the read signal is generated with pulses corresponding to the peaks.

REFERENCES:
patent: 3631335 (1971-12-01), Carr et al.
patent: 4001673 (1977-01-01), Barrett et al.
patent: 4321636 (1982-03-01), Lenz
patent: 4967155 (1990-10-01), Magnuson
patent: 5087884 (1992-02-01), Brannon
patent: 5130866 (1992-07-01), Klaassen et al.
patent: 5212445 (1993-05-01), Meyer

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