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Op Amp Gain

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smudge

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:D Hi

I am new to Op Amps so could anybody help me with a question regarding this please.

I need to create a circuit wherethe output is ten times the difference between its two input signals. I think this could be realised using just two operational amplifiers and five resistors.

could anybody help please??? :lol:
 
Only one opamp is required, and four resistors.

Like so:
 

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Sorry I forgot to mention the equation I would like to base my circuit around.

Vo=10(V2-V1)

Would a second op amp be required to get rid of the -
 
Yes, you could use an inverting amplifier, with a gain of -1, on the output of the above circuit.

Or you could just swap the inputs.
 
The circuit Phasor posted has the gain you want. No inversion is required.
 
I have used the search engines to find information regarding OP AMPS and indeed the example given above is used in many instances. However, the question I have requires me to find any information I can to obtain the same results using 2 Op Amps & 5 Resistors. I would also like to find any relevant equations to find the resistor values. This is proving rather difficult, I have been on many sites!!!
 
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