by odel1830 » Mon Apr 14, 2014 10:21 pm
I am having trouble deriving a general equation for calculating R3 (shown in the attached JPG image). V1, R1, and R2 values depicted in the image are constant values and will not be changed. I will be writing code for my microprocessor's ADC to measure Vout, so Vout will be known. I just need an equation to plug in to my code to calculate R3, can any one help?
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