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Good evening.

Right. My question is one of a simple nature, I think.

Anyways, consider the following non-inverting Op-Amp design:

http://www.freewebs.com/mushg/FWThumbnails/OpAmp.bmp [Broken]

Now, the basic formula for any non-inverting opamp is of course [itex]\frac{V_{O}}{V_{S}} = 1 + \frac{R_{2}}{R_{1}}[/itex]

Meaning that [itex]V_{O} = V_{S} + \frac{V_{S}R_{2}}{R_{1}}[/itex]

I'm trying to find [itex]V_{O}[/itex]

My question, how do I take into account the[itex]R_{S}[/itex] In this situation? Does it have any bearing at all, if so, what?

Thanks

Right. My question is one of a simple nature, I think.

Anyways, consider the following non-inverting Op-Amp design:

http://www.freewebs.com/mushg/FWThumbnails/OpAmp.bmp [Broken]

Now, the basic formula for any non-inverting opamp is of course [itex]\frac{V_{O}}{V_{S}} = 1 + \frac{R_{2}}{R_{1}}[/itex]

Meaning that [itex]V_{O} = V_{S} + \frac{V_{S}R_{2}}{R_{1}}[/itex]

I'm trying to find [itex]V_{O}[/itex]

My question, how do I take into account the[itex]R_{S}[/itex] In this situation? Does it have any bearing at all, if so, what?

Thanks

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