create a DC offset value for non-inverting amplifier
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 31st May 2008, 08:27 AM #1 finding_apple   diyAudio Member   Join Date: May 2008 create a DC offset value for non-inverting amplifier Hi all, anyone knows how to create a DC offset value for non-inverting amplifier? When i try to put resistors to create the offset value of 2.5 v at o/p , the DC o/p is close to 0V which means there is no gain in the circuit, but i did put resistors to set the gain to 1001times. I dun understnd why the amplification is not done?
 31st May 2008, 08:42 AM #2 AndrewT   diyAudio Member   Join Date: Jul 2004 Location: Scottish Borders build a DC amplifier. Then apply a voltage bias/offset to the input that results in the correct output offset. __________________ regards Andrew T. Sent from my desktop computer using a keyboard
 31st May 2008, 08:42 AM #3 Nordic   diyAudio Member     Join Date: Sep 2005 please post schematic.. it is a universal language we can all engage in... edit.. lol, hi Drew
 31st May 2008, 09:18 AM #4 Mooly   diyAudio Moderator     Join Date: Sep 2007 Why do want to do this anyway-- just interested
Elvee
diyAudio Member

Join Date: Sep 2006
Re: create a DC offset value for non-inverting amplifier

Quote:
 Originally posted by finding_apple Hi all, anyone knows how to create a DC offset value for non-inverting amplifier? When i try to put resistors to create the offset value of 2.5 v at o/p , the DC o/p is close to 0V which means there is no gain in the circuit, but i did put resistors to set the gain to 1001times. I dun understnd why the amplification is not done?
In general, when there are no particular constraints, I do it this way:
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