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Vin

n00b

Sep 3, 2014
11
Joined
Sep 3, 2014
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Hey, guys

The circuit below is a standard buffer amplifier. Vin can be any voltage between 1-10v but i would also like it to increase Vin by an additional 0.5v when an input between 1-10v is applied so that, for example; if a signal Vin is 1v, the signal that will actually be inputted is 1.5v all the way to a signal Vin of 10v which will be 10 + 0.5v = 10.5v.

IMG_20140916_153246.jpg

thanks!
 

Harald Kapp

Moderator
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Nov 17, 2011
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Look at a difference amplifier (e.g. about half way down this page).
Vout=(V2-V1)*Rf/Ri
Set Rf=Ri for a gain of 1.
Set V2=Vin, V1=-0.5V, therefore V2-V1= Vin+0.5V
 

n00b

Sep 3, 2014
11
Joined
Sep 3, 2014
Messages
11
Is there a simple way to keep Vin @ 0v if Vin<1v?

thanks~
 
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