Re: A Small Network Analysis Problem - Urgent - Please help.
purifier,
The easiest way to solve this type problem is to assume the NI input of the OP Amp is at virtual ground.
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Assume the voltage at the junction of the rightmost R-2R-R junction is 1 volt.
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Calculate the current through the left-most R, based on the 1 volt assumption.
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Calculate the voltage at the "input side of this R, based on the current calculation above.
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Continue this process untill you reach the input. Call the calculated input Vr'
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Scale the node voltages by a factor equal to Vr'/Vr.
Regards,
Jon