Three op-amp Instrumentation amplifier circuit simulation using proteus

Dear all hand

As iam said before that theorically we can build our our instrumentation use op-amp. But its very challenging to simulate our instrumentation amplifer before we make it real. As usual we use proteus isi to build and to simulate our instrumentation amplifer .

Very important for us to use ideal op-amp in build instrumentation amplifier circuit that we want to simulate

What we need is:

1. 3 ideal op-amp
2. 6 ideal resistor
3. 1 Vsine
4. One potentio

And we arrange components above become three op-amp instrumentation circuit below :

The input and output relationship of the instrumentation amplifier above is :

Applying ohm law to R1 gives :

And we can rearrange equation above become :

And finally we get the output :

In this simulation we take R4= R5 .

To view output and input of this instrumentation amplifier we use oscilloscope (located at left bar of Proteus Isis)

Set V1 (sine ) at 4mV and 10 hz , and run simulate , the simulation result depicted below :