Static charge protection for magnetic thin film data transducers

Details Static charge protection for magnetic thin film data transducers Static charge protection for magnetic thin film data transducers

1987-08-10

1989-01-24

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360123, G11B 560, G11B 530

Patent

active

048004545

ABSTRACT:
A thin film magnetic data transducer carried on the end of a conductive flyer has its magnetic pole electrically connected to the flyer to prevent electrostatic discharges between the flyer and the pole tip from eroding the pole tip. The winding of the transducer is also electrically connected to the flyer either through a high resistance, through a diode with high forward and reverse voltage drops, or through a fusible link, so as to bleed off static charges on the winding without their arcing through to the magnetic pole and damaging the insulation between the winding and the magnetic pole. These embodiments avoid any degrading of the data readback signal.

REFERENCES:
patent: 4317149 (1982-02-01), Elser
IBM Technical Disclosure Bulletin, vol. 17, No. 9, Feb. 1975, p. 2549, Thin Film Transducer Protection.

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