Computational circuit for transforming an analog input voltage i

Details Computational circuit for transforming an analog input voltage i Computational circuit for transforming an analog input voltage i

1990-04-09

1992-07-14

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307493, 307261, 307360, 328 28, 328142, G06G 712, H03K 500, H03K 5153, H03K 508

Patent

active

051305771

ABSTRACT:
An analog computational circuit, for transforming an input voltage into an output voltage or current variable according to a selected transfer function, including a plurality of current sources having a common input and a common current output. Each of the current sources is energizable in response to an input voltage as it exceeds a selected input voltage threshold associated with each of the current sources. There are means coupled to the current sources for establishing the input voltage threshold associated with each of the current sources. Also included are means coupled to each of the current sources for establishing the selected transfer function of the computational circuit. Each of the current sources is adapted to begin conducting current in response to an input voltage which exceeds its associated input voltage threshold, and to provide an attenuated output current proportional to the input voltage, the proporation established by the selected transfer function. The analog computational circuit is integratable into other circuits.

REFERENCES:
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patent: 3876888 (1975-04-01), Gyugyi et al.
patent: 4207478 (1980-06-01), Marumoto et al.
patent: 4677366 (1987-06-01), Wilkinson
National Semiconductor Corp. Applications Note #31 Jun., 1986, Revision, p. 19.
Analog-Digital Conversion Notes Chapter 11-1, pp. 116-117, 1977.

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