I found an LM308 op-amp chip because i realize the educational set-top op-amp box has resistors built in for gain adjustment.
I am trying to connect up the attached image on a breadboard.
Rf=200
Rw=10
R1=1000
R2=100
V1=0-5V
I hooked it up with the neg connection of the adjustable 12 V DC power supply to one of the rails, and the positive 12V DC power supply to the other rail. I am assuming this will give me the desired +/- max 15 V power required for the op-amp.
Unfortunately, the + input of the op-amp is hooked up to ground. But I am reading a volt or so across the + to - op-amp inputs, so something is not right.
Any suggestions would be a help.
I am trying to connect up the attached image on a breadboard.
Rf=200
Rw=10
R1=1000
R2=100
V1=0-5V
I hooked it up with the neg connection of the adjustable 12 V DC power supply to one of the rails, and the positive 12V DC power supply to the other rail. I am assuming this will give me the desired +/- max 15 V power required for the op-amp.
Unfortunately, the + input of the op-amp is hooked up to ground. But I am reading a volt or so across the + to - op-amp inputs, so something is not right.
Any suggestions would be a help.
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