Differential Opamp.

Posted by Mr Mallon on May 23, 2013

Here is the set up for an opamp set to differential mode.

[kml_flashembed movie=”http://www.helpmyphysics.co.uk/opamp_diff.swf” height=”450″ width=”550″ /]

This set up amplifies the difference between the two voltages.

daum_equation_1369347773825

Looking at the input and feedback resistors we have:
daum_equation_1369348006205

Click the green arrows of V2 and V1 and check out that the difference between V2 and V1 is multiplied by 2.

This is an example of a differential amplifier.

Categories: Higher Physics
23May

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