Magnetic head drive circuit

Details Magnetic head drive circuit Magnetic head drive circuit

1993-04-05

1994-01-18

Wambach, Margaret R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307446, 307246, 307570, 360 46, 360 67, 360 68, H03K 301, H03K 1902

Patent

active

052801969

ABSTRACT:
A magnetic head drive circuit includes a first MOS transistor of a first conductivity type, a bipolar transistor of a second conductivity type, a second MOS transistor of the second conductivity type, a second bipolar transistor of the first conductivity type. The first MOS transistor of a first conductivity type has a source connected to a first power supply. The first bipolar transistor of a second conductivity type is connected in series with the first MOS transistor and has a common node thereof as a first output terminal, an emitter connected to a second power supply, and a collector current controlled as a constant current. The second MOS transistor of the second conductivity type has a source connected to the first power supply. The second bipolar transistor of the first conductivity type is connected in series with the second MOS transistor and has a common node thereof as a second output terminal, an emitter connected to the second power supply, and a collector current controlled as a constant current.

REFERENCES:
patent: 5155387 (1992-10-01), Fletcher et al.
patent: 5166837 (1992-11-01), Nakamura

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