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Calculation depends on the design or the IC chip you have chosen. The datasheet may provide the formula. For general op-amp, you can search in the web for amplifier op-amp. The formula are usually there. Try search inventing op-amp or non-inverting op-amp.
Miguel,
somehow the ".5" disappeared from your calculations. Shouldn't that be 11.5? This would make the resistor R2=115k for R1=10k. Actually, one could use a potentiometer to better tune the output to the desired voltage.
Operational Amplifier is an IC.
It has two modes.
* Inverting mode
* Non Inverting mode
For the derivation of the calculations refer "Ramakant A Gayawad" "Op Amps and Linear Integrated Circuits" Prentice Hall of India Publications.
Regards,
Avinash.S.
Added after 3 minutes:
Hi dipal_z,
The formula that u've given is only for the Inverting mode. Please give me the formula for the Non inverting mode also.
Hi,
There are two kinds of amplifier using op-amp_ DC and AC amplifier, here you need DC amplifier, this is different from AC amplifier. You should be careful when design a board.
Don´t be confused: In principle, there is no difference between dc and ac amplification using opams.
The only difference could be if you use single supply operation, because in this case a decoupling cap is to be used which blocks dc.
LvW
Hi,
There are two kinds of amplifier using op-amp_ DC and AC amplifier, here you need DC amplifier, this is different from AC amplifier. You should be careful when design a board.
As I have stated on May 22:
In principle, there is no difference between dc and ac amplification using opamps.
The only difference could be if you use single supply operation, because in this case a decoupling cap is to be used which blocks dc.
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