Transistor write current switching circuit for magnetic recordin

Details Transistor write current switching circuit for magnetic recordin Transistor write current switching circuit for magnetic recordin

1990-11-16

1991-11-05

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307446, 307270, 307493, 323315, H03F 304

Patent

active

050633104

ABSTRACT:
A transistor circuit of the invention comprises a current mirror circuit including input-side bipolar transistors and output-side bipolar transistors, an on-off control circuit including MOS transistors for on-off controlling of the base current of the output-side bipolar transistors, and MOS transistors for rendering the output-side bipolar transistors to securely turn off. The MOS transistors are normally connected between the bases of the output-side transistors and a ground terminal.

REFERENCES:
patent: 4603291 (1986-07-01), Nelson
patent: 4678942 (1987-07-01), Kanai et al.
patent: 4721866 (1988-01-01), Cli et al.
patent: 4897564 (1990-01-01), Clen
patent: 4910480 (1990-03-01), Crosby
patent: 4943743 (1990-07-01), Pelley, III et al.
patent: 4958094 (1990-09-01), Ishii et al.

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