Circuit with a voltage-controlled resistance

Details Circuit with a voltage-controlled resistance Circuit with a voltage-controlled resistance

1991-01-30

1994-04-05

Sikes, William L.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307490, 307499, 3072967, H03K 1760

Patent

active

053008340

ABSTRACT:
A circuit with a voltage-controlled variable resistance comprises a MOS transistor (2), one of the main electrodes (S) of which is connected to a common terminal (B), a control voltage (VC) being applied between its control electrode (G) and the common terminal. This circuit comprises a voltage dividing bridge (R1, R2) switched between a first terminal (A) and a common terminal (B) and a follower (6, 4), the input of which receives the output (5) of the divider (R1, R2) and the output (8) is connected to the other main electrode (D) of the MOS transistor; whereby the resistance between the first terminal (A) and the common terminal (B) varies as a function of the control voltage (VC).

REFERENCES:
patent: 3715609 (1973-02-01), Hallen
patent: 3986060 (1976-10-01), Nishizawa et al.
patent: 4013975 (1977-03-01), kataoka et al.
patent: 4737734 (1988-04-01), Hemingway
patent: 4945266 (1990-07-01), Mori
Nay and Budak, "A Voltage-Controlled Resistance with Wide Dynamic Range and Low Distortion" IEEE Transactions on Circuits and Systems, vol. CAS-30, No. 10, Oct. 1983, pp. 770-772.

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