Patent Number: 6,297,922

Title: Magnetic recording control circuit with current reducers

Abstract: A magnetic recording control circuit for controlling current through a magnetic recording head includes a switch network, a signal coupler, and a current reducer. The switch network is connected to first and second magnetic recording head node regions and includes first, second, third, and fourth switches each having a variable magnitude conduction path and a control region. The signal coupler includes an input region and a plurality of output regions each connected to the control region of a corresponding switch. The current reducer is connected to the first magnetic recording head node region and shunts current away from the signal coupler.

Inventors: Kuehlwein; Jeremy R. (Woodbury, MN)

Assignee: Agere Systems Guardian Corp.

International Classification: G11B 5/09 (20060101); G11B 5/02 (20060101); G11B 5/00 (20060101); G11B 005/02 (); G11B 005/09 ()

Expiration Date: 10/02/2018