The circuit shown is a differential amplifier that not only offers programmability but also provides a logarithmic-type gain (Fig. 1). The traditional gain-setting resistors of the amplifier, R1 and ...
SIAM Journal on Numerical Analysis, Vol. 25, No. 1 (Feb., 1988), pp. 153-162 (10 pages) For moderate-sized problems one can obtain numerical solutions with rigorous ...
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