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## Homework Statement

Using the level shifter shown below, design a circuit that will shift a signal from from +/- 25 volts (50 volts P-P) to 0 to 5 volts. Assume R1=R3=100K and R2=R4.

In answer 1 give the value for Vref with 1 decimal point of precision

in answer 2 gie the value for R2=R4 in K ohms.

http://img695.imageshack.us/img695/4536/shifterl.th.jpg

## Homework Equations

Vo = (Vin -Vref) R4/(R3+R4) + Vref

## The Attempt at a Solution

I am just confused where the R2 takes place... do I just plug and chug

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