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circuit with +1 and -1 gain

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hock

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i remember sone one had posted a circuit which could provide a gain of +/-1 sometime back .
dose any one remembers the circuit?

hock
 

It can be done with dual opamp IC connected as shown in the attached cartoon ..

Rgds,
IanP
 

Hi hock,
Are you viewing for so a solution or with switched /controlled gains between +1 to -1?
K.
 

Yea, I think he does searching for that:)...
K.
 

thanks all this was the circuit i was looking for.

hock
 

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