Current generating circuit for read/write head

Details Current generating circuit for read/write head Current generating circuit for read/write head

1997-02-28

1998-10-06

Berhane, Adolf

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

323315, G05F 320

Patent

active

058182110

ABSTRACT:
A current generating circuit which has a current source, two switches connected in serial between one of the output terminals and a first or second transistor, and a control signal generating circuit that generates a control signal for operating the first and second transistors out of phase. A write current is generated between the output terminals by direct switching of a current supplied to the first and second transistors by the two switches. The dynamic range of the output voltage for a magnetic head in a recording apparatus connected to the output terminals can be made large, and the rising and falling times of the write current can be shortened to result in an improved high speed recording.

REFERENCES:
patent: 3683270 (1972-08-01), Mattis
patent: 4127783 (1978-11-01), Alaspa
patent: 4563632 (1986-01-01), Palara et al.
patent: 4603290 (1986-07-01), Shinomiya
patent: 5391979 (1995-02-01), Kajimoto et al.
patent: 5517103 (1996-05-01), Ng et al.

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