Monitoring power supply voltage to hard disk drive

Details Monitoring power supply voltage to hard disk drive Monitoring power supply voltage to hard disk drive

1997-07-29

2000-01-11

Martin, David

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Starting and/or stopping

318632, 318635, 323901, 323908, 323284, H02P 154

Patent

active

060139900

ABSTRACT:
A hard disk drive for supplying a power supply voltage by monitoring a power supply voltage and method of controlling the same. The hard disk drive includes a power supply monitor circuit for monitoring an initially supplied power supply voltage, and a controller for supplying a prescribed reference voltage to the power supply monitor circuit, and for controlling the power supply voltage generated when initially activating a spindle motor by varying a permissible variation level of the power supply voltage of the power supply monitor circuit.

REFERENCES:
patent: 4634951 (1987-01-01), Kampf et al.
patent: 4647825 (1987-03-01), Profio et al.
patent: 5003242 (1991-03-01), Liber
patent: 5206572 (1993-04-01), Farag et al.
patent: 5339446 (1994-08-01), Yamasaki et al.
patent: 5457365 (1995-10-01), Blagaila et al.

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