Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Unwanted signal suppression
Patent
1996-12-02
1999-03-09
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Unwanted signal suppression
327110, 327311, 360 46, H03B 100
Patent
active
058806261
ABSTRACT:
An active damping system for reducing the ringing effects in write current signals flowing through a write head of a disk drive write circuit. The active damping system stores a voltage related to the write current, sinks write current from a terminal of the write head in response to a predetermined rate of increase in the stored voltage, and provides a high impedance to the terminal when the rate of increase of stored voltage is below the predetermined rate. The active damping system preferably includes a transistor connected between the write head terminal and a common electrical potential, a capacitor connected between the terminal and a base of the transistor, and a resistor connected between the base of the transistor and the common electrical potential.
REFERENCES:
patent: 2892165 (1959-06-01), Lidsay
patent: 3388219 (1968-06-01), Davis
patent: 3593113 (1971-07-01), Wiley
patent: 3704656 (1972-12-01), Ogiso et al.
patent: 4218950 (1980-08-01), Uetrecht
patent: 5350997 (1994-09-01), Ghotbi et al.
patent: 5357379 (1994-10-01), Gower
patent: 5363249 (1994-11-01), Fitzmorris
patent: 5459383 (1995-10-01), Sidman et al.
VTC Inc.
Wells Kenneth B.
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