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Mar 5, 2018 at 9:59 answer added Spehro 'speff' Pefhany timeline score: 1
Mar 5, 2018 at 9:36 history edited Sami CC BY-SA 3.0
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Mar 5, 2018 at 4:17 history edited user80875
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Mar 5, 2018 at 3:31 answer added user105652 timeline score: 0
Mar 5, 2018 at 2:59 comment added user105652 Welcome to EE.SE. Well, at least this much works good, so it is best to leave it alone and do the level shifting downstream. Use a DC blocking capacitor, a resistors and diode to get rid of negative voltage. Now you have only 0 to 4 volts to fix. Add a 2.5 volt offset, then subtract 2.75 volts to get 2.25 to 3.25 volts.
Mar 5, 2018 at 2:57 comment added Russell Borogove You can use another op-amp to offset and scale the signal. There's a worksheet here: ti.com/lit/an/sloa097/sloa097.pdf and an online calculator here: daycounter.com/Calculators/Op-Amp/… that might be of use.
Mar 5, 2018 at 2:42 review First posts
Mar 5, 2018 at 2:52
Mar 5, 2018 at 2:40 history asked Sami CC BY-SA 3.0