Patent ID: 6236247
Filing Date: 2001-05-22
Classification: G11B

Abstract:
A write driver having first and second nodes for connection to a conductor assembly that is connected to opposite sides of a winding of a write head, the write driver comprising:a first current switch coupled to the first node;a second current switch coupled to the second node;an input responsive to an input signal for selectively operating the first and second switches to direct a substantially DC write current through the winding in respective first and second directions;a first impedance matching circuit connected between the first node and the first current switch, the first impedance matching circuit includinga first resistor having an impedance value substantially matching an impedance value of the conductor assembly including the write head; anda second impedance matching circuit connected between the second node and the second current switch, the second impedance matching circuit includinga second resistor having an impedance value substantially matching an impedance value of the conductor assembly including the write head.