Im trying to do a project that requires measurement of a voltage across a resistor in a voltage divider network. I tried the circuit below, but i wasnt able to get correct output. I have a 2.8Vdc across a resistor, Vr, but the output was different. I got a .7V output.
I am only limited to a single supply voltage for the opamp. I used a LM358 opamp and I adapted the circuit from the datasheet of LM358.
Is it really necessary to have a dual supply for the opamp??
Is there any other circuit I can use for this purpose??
help!!!!!!!!!!
I am only limited to a single supply voltage for the opamp. I used a LM358 opamp and I adapted the circuit from the datasheet of LM358.
Is it really necessary to have a dual supply for the opamp??
Is there any other circuit I can use for this purpose??
help!!!!!!!!!!