Miscellaneous active electrical nonlinear devices – circuits – and – Specific input to output function – Exponential
Patent
1993-12-17
1995-02-21
Wolfe, Willis R.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific input to output function
Exponential
327360, 327355, 327103, G06G 700, G06G 724, G06G 716, G06F 7556
Patent
active
053919475
ABSTRACT:
A circuit for providing an output current proportional to a first voltage raised to a fractional exponential power divided by a second voltage raised to a fractional exponential power, is supplied. The circuit has four strings of series connected pn junctions. The first and second voltages are connected to the first and fourth string, respectively. A reference current is provided to the second string, while the third string provides the output current. The number of pn junctions are chosen to give the desired fractional exponents of the two voltages while the number of pn junctions in the third string is selected to adjust for the number of pn junctions in the other strings.
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Groves, Jr. James O.
Hurd Jonathan J.
Newton Stephen F.
International Business Machines - Corporation
Samodovitz Arthur J.
Steinberg William H.
Wolfe Willis R.
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