Patent ID: 6184727
Filing Date: 2001-02-06
Classification: G11B,H03K

Abstract:
In a write current driver circuit including first and second switching devices for directing write current in opposite directions through a write head between first and second terminals in response to first and second input signals, the improvement of turn-off control circuitry comprising:a first active device coupled to a control clement of the first switching device;a second active device coupled to a control element of the second switching device;first control means for operating the first active device to pull current from the control element of the first switching device in a first current path upon activation of the second input signal;second control means for operating the second active device to pull current from the control element of the second switching device in a second current path upon activation of the first input signal;a first capacitor coupled between the first input signal and a controlled element of the first active device; anda second capacitor coupled between the second input signal and a controlled element of the second active device.