Patent ID: 6061192
Filing Date: 2000-05-09
Classification: G11B

Abstract:
A method for providing feedback to a selected read head circuit having a read head bias voltage in a multi-head disk drive, comprising the steps of:generating first and second currents in response to the read head bias voltage;generating third and fourth currents in response to the read head bias voltage;selecting one of the third and fourth currents;amplifying the selected one of the third and fourth currents to produce an amplified current;supplying the first current to a first charge plate of a capacitor;supplying the second current and the amplified current to a second charge plate of the capacitor;supplying a potential level associated with the first charge plate of the capacitor to a first voltage input of the read head circuit; andsupplying a potential level associated with the second charge plate of the capacitor to a second voltage input of the read head circuit.