mhrobson
Nov29-09, 04:50 PM
I need to derive the following equation with respect to R3. This is the equation for a Wheatstone bridge. Unfortunately I am not very good at derivations. Here is the equation:
VO=((R3/(R2+R3))-(R4/(R1+R4)))VS
I came up with the following answer but was told that it is wrong:
dVO/dR3 = ((1/(R2+R3))-(R3/(R2+R3)2)VS
If you want to be a real sport, set R1=R3 and derive the same expression.
VO=((R3/(R2+R3))-(R4/(R1+R4)))VS
I came up with the following answer but was told that it is wrong:
dVO/dR3 = ((1/(R2+R3))-(R3/(R2+R3)2)VS
If you want to be a real sport, set R1=R3 and derive the same expression.