# Voltage-to-Current Converter Analysis Problem

Discussion in 'Homework Help' started by jegues, Feb 10, 2011.

1. ### jegues Thread Starter Well-Known Member

Sep 13, 2010
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43
I am given the circuit in the figure attached and asked to determine $i_{o}$ as a function of $v_{I}$. Me and a few of my colleagues have been aruging over whether the correct answer is,

$i_{o} = \frac{-v_{I}}{R}$ or $i_{o} = \frac{v_{I}}{R}$.

Could someone please check my analysis, I don't think I've done anything wrong.

Thanks again!

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2. ### t_n_k AAC Fanatic!

Mar 6, 2009
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Last edited: Feb 11, 2011
3. ### bitrex Member

Dec 13, 2009
79
4
The analysis looks fine - all it means is that you've got the inputs reversed. The current will be positive when V1 is more positive than V2.