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op-amp integrator with reset

Discussion in 'Electronics Homework Help' started by ivkil, May 25, 2013.

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  1. ivkil

    ivkil

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    May 25, 2013
    Hello! I'm new in electronics. I have a sine wave on the input and my task is to obtain a triangle wave with spikes (exponential function on trailing edge) on the output. (See pic. Attach 1)

    I have tried to solve this problem. (See pic. Attach 2) Firstly, due to big values of gain of op-amp 741 I obtain a squre wave. Then with the help of inverting op-amp 741 gave the inverse. After that I have tried to integrate my signal via integrator on op-amp 741 with reset on FET 2N3819. Switching diode is 1N4148.
    I cannot calculate the right circuit parameters (RC time constants). Also I do not understand the role of passive differentiator on the reset input (that was the tip of my teacher).

    Please help me to buit the scheme for signal conversion! Thanks.
     

    Attached Files:

    Last edited: May 25, 2013
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