create a DC offset value for non-inverting amplifier

finding_apple · 31st May 2008, 08:27 AM

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?

AndrewT · 31st May 2008, 08:42 AM

build a DC amplifier.
Then apply a voltage bias/offset to the input that results in the correct output offset.

Nordic · 31st May 2008, 08:42 AM

please post schematic.. it is a universal language we can all engage in...

edit.. lol, hi Drew

Mooly · 31st May 2008, 09:18 AM

Why do want to do this anyway-- just interested

Elvee · 4th June 2008, 09:01 AM

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:

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.

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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 Member Join Date: Sep 2007	Why do want to do this anyway-- just interested

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