Hi guys
I need to convert a sine wave signal 0 - 3V into -9 to +9 sine wave. I think I need to use Opamp but I am not able to figure out circuit.
How can I do it?
Unipolar to Bipolar
Jun 15, 2007
5 Replies
Subtract 1.5 and multiply by 6.
cbfalconer at maineline dot net
Are you doing this analog or digital? If digital, see C B Falconer's post. If analog, restore the zero with a capacitor, then use a X6 opamp.
If you are going to ask a question in MULTIPLE places
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this is a less selfish way to do it:
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*-*-*-marked-as-Read-in-ALL-*-groups+Newsgroups.line
So its different from Fahrenheit to Centigrade then?
Peter
You can mix it with -1.5V on the passive mixer like this one:
R 0-3V o--===-- |--o -0.75 - 0.75 -1.5V o--===-- R
And then run it through 12x amplifier (for example 2nd circuit in this apnote)
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Or use difference amplifier (circuit 3 in same appnote).
-- Roman
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