Electronically controllable resistor

Details Electronically controllable resistor Electronically controllable resistor

1991-04-05

1993-09-28

Lateef, Marvin M.

Electrical resistors

Miscellaneous

257536, 338260, 338295, H01C 1300

Patent

active

052489566

ABSTRACT:
An electronically controllable resistor (ECR) which functions as a fixed or variable resistor over a wide range of operating conditions. The value of the resistance may be altered in a highly linear fashion by altering a digital input thereto. The ECR utilizes an array of transmission gates, preferably having a uniform inherent resistance and preferably fabricated using CMOS technology which are grouped in commonly controlled groups. Each group preferably contains a number of transmission gates which relates to the numbers of transmission gates in other groups in a binary fashion. The source of digital control signals is preferably provided by a digital memory device which can be integrated with the transmission gate array. An operational amplifier can also be provided on the chip to form a complete neural processing element for inclusion in large neural networks.

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"Self Adjusting Weights for Hardware Neural Networks" by R. M. Inigo, A. Bonde, Jr., B. Holcombe.
"Analog Hardware Implementation of Neocognitron Networks", by R. M. Inigo, Allen Bonde, Jr., Bradford Holcomb; Dept. of Electrical Engineering, UVA.

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