Hybrid termination of transmission line for driving hard...

Details Hybrid termination of transmission line for driving hard... Hybrid termination of transmission line for driving hard...

2011-04-12

2011-04-12

Tzeng, Fred (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Reexamination Certificate

active

07924525

ABSTRACT:
Drive circuitry for driving a load through a connection to a transmission line, such as for driving the write head of a hard disk drive. A hybrid termination is provided for termination at the connection to the transmission line. The termination is hybrid since there is both an in-series and an in-parallel component to the termination resistance. In addition, in embodiments where there is matched termination of the transmission line during a boost period of driving the load, the termination is hybrid since the termination is switched between a boost period of a write operation, and a steady state period of the write operation.

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