ANALYSIS AND DESIGN OF HEAD-PREAMPLIFIER CONNECTIONS IN READ-WRITE CHANNELS FOR MAGNETIC RIGID-DISK DRIVES

In a magnetic rigid-disk drive, information to and from the data surfa ces is transferred by a system that consists of a read/write preamplif ier, conductors and the read and write transducers. Printed-circuit co nductors are now replacing the connection between the head and the rea d/write preamplifier that has conventionally been designed using twist ed-pair wires. This paper provides a practical method of simulating th e electrical behavior of these interconnects, and through comparisons with measurements, demonstrates the validity of the design procedure.