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Multisim and Ultiboard
Amplifier Gain
I am planning to find the gain of the non-inverting operational amplifier as attached (Forum Help.ms14) and also the photo inserted.
Using the fomula 1 + Rf1/Rin1, i should get a gain of 2 db. However, when I simulate it, i will get 5.229dB. May I know where did I go wrong? Currently using Multisim 14
Hi ForexAnalyzer,
The dB option of the Multimeter is to calculate the decibel loss between two nodes in a circuit. It wouldn't measure the gain of an amplifier.
The suggested way to know if a circuit is working is to calculate the gain using the formula and verify if that matches the expected output. I will recommend using an oscilloscope to measure the output. unfortunately, there is no instrument to measure the gain of a circuit directly.
As you can see in the image below, the output is 2V pk-pk.
As you can see, the output matches the correct gain.
Regards
Hector M
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