Read head protection circuit and method

Read head protection circuit and method

A circuit (80) and method (84) for protecting read heads (18) of a hard-disk drive system (100). Capacitor C1 is controllably coupled to a dummy head Rdummy during a Vbias mode, so that capacitor C1 has a low, predictable voltage upon returning to Ibias mode, protecting the read heads (18) from dama...

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Hauptverfasser: MANJREKAR ASHISH, BLOODWORTH BRYAN E, IROAGA ECHERE
Format: Patent
Sprache:eng
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator MANJREKAR ASHISH
BLOODWORTH BRYAN E
IROAGA ECHERE
description A circuit (80) and method (84) for protecting read heads (18) of a hard-disk drive system (100). Capacitor C1 is controllably coupled to a dummy head Rdummy during a Vbias mode, so that capacitor C1 has a low, predictable voltage upon returning to Ibias mode, protecting the read heads (18) from damage. The circuit (80) includes logic (82) and algorithm (84) determining when to couple the capacitor C1 to the dummy head Rdummy during a servo bank write (SBW) sequence.
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title Read head protection circuit and method
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