Wide range linear inpedance controller using junction field effe

Details Wide range linear inpedance controller using junction field effe Wide range linear inpedance controller using junction field effe

1986-05-27

1988-04-19

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307264, 307499, 307501, 307568, H03K 508

Patent

active

047391960

ABSTRACT:
A controller includes a pair of field-effect transistors interconnected so that their drain-to-source paths are electrically in a parallel circuit combination. The field-effect transistors have similar characteristics except that their minimum drain-to-source impedances are different from each other. An equivalent impedance of the parallel circuit combination is controlled by the gate-to-source voltages of the field-effect transistors. An input signal having a wide range is applied to a control circuit for producing concurrently different magnitude control signals, each of which is applied across the gate-to-source input of a separate one of the field-effect transistors for controlling its drain-to-source impedance over its most linear operating range.

REFERENCES:
patent: 3621284 (1971-11-01), Cluett et al.

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