US4563653A
|
|
Servo preamplifier and demodulator chain using transconductance balanced modulators
|
US4425534A
|
|
Linear motor velocity sensor
|
US4384309A
|
|
Closed loop servo demodulator for positioning a servo head
|
US4371904A
|
|
Flexible magnetic disk system
|
AU4887379A
|
|
Emergency head unload system for magnetic disk drive
|
US4237501A
|
|
Emergency head unload system for magnetic disk drive
|
US4357707A
|
|
Digital phase lock loop for flexible disk data recovery system
|
US4301416A
|
|
Servo preamplifier and demodulator chain using transconductance balanced modulators
|
US4207601A
|
|
Transient temperature compensation for moving head disk drive
|
US4205357A
|
|
Disk drive unit incorporating a field-replaceable fixed disk assembly
|
US4167772A
|
|
Circuit board mounting means
|
CA1089951A
|
|
Electronic system for detecting direction of motion
|
US4244109A
|
|
Apparatus for mounting and aligning printed circuit board
|
US4078192A
|
|
Synthesizer for multiphase waveforms
|
US4078173A
|
|
Light amplitude control system for position and motion transducers
|
US4055814A
|
|
Phase locked loop for synchronizing VCO with digital data pulses
|
US4027217A
|
|
Speed control for a motor
|
US4012791A
|
|
Disk drive apparatus
|