Title :
Time domain network analysis of write head coil impedance
Author_Institution :
Seagate Technol. Inc., Oklhoma City, OK, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
In this paper, time domain network analysis methods are used to measure the electrical impedance of a magnetic disk drive write head, An incident step capable of delivering ±73 mA to the write coil simulates typical operating levels. The paper compares results to more common vector network analysis measurements, which are done at small-signal levels. It discusses the application of the measured transient response to high data rate recording
Keywords :
coils; hard discs; magnetic heads; time-domain analysis; transient response; -73 to 73 mA; high data rate recording; magnetic disk drive; operating levels; time domain network analysis; transient response; write head coil impedance; Analytical models; Coils; Disk drives; Electric variables measurement; Impedance measurement; Magnetic analysis; Magnetic domains; Magnetic heads; Time domain analysis; Time measurement;
Journal_Title :
Magnetics, IEEE Transactions on
