Apparatus for providing a nonlinear response

Details Apparatus for providing a nonlinear response Apparatus for providing a nonlinear response

G - Physics

06

G

G06G 7/28 (2006.01) G06G 7/24 (2006.01)

Patent

CA 2274635

An amplifier which outputs a nonlinear function in response to a linear input. The nonlinear response is a piece-wise linear approximation. The circuit includes an op amp which outputs a ramping voltage and a series of stages which change the slope of the ramping voltage. As the output of the op amp reaches a particular breakpoint, an additional stage of the circuit is activated so as to change the slope of the output. The new line segment has a new slope such that the combination of all these stages approximates a nonlinear response.

La présente invention concerne un amplificateur produisant une fonction non linéaire en réponse à une entrée linéaire. La réponse non linéaire est une approximation linéaire au cas par cas. Le circuit comporte un amplificateur opérationnel qui donne une tension en rampe et une série d'étages convertissant la pente de la tension en rampe. La sortie de l'amplificateur opérationnel atteint un point de rupture particulier, un étage additionnel du circuit est activé de façon à changer la pente de la sortie. Le nouveau segment de ligne présente une nouvelle pente telle que la combinaison de tous ces étages donne approximativement une réponse non linéaire.

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