Hi all
Quick question: I need to add and then remove DC bias to a data signal.
To remove the DC bias is easy (I plan to use a high pass filter consisting of a resistor and capacitor)
However, how do I add the DC bias to the signal?
I did a bit of reading and the following circuit was found:
http://www.ecircuitcenter.com/circuits/opsum/opsum.1.gif
(The picture is from the level shifter from http://www.ecircuitcenter.com/circuits/opsum/opsum.htm)
However, this is described as a inverting summer,which would invert my data signal (Which I do not want)
I would also like to work from a single supply OP-AMP, so I want to keep my signal above ground. Any suggestions?
Regards,
Dollarday
Quick question: I need to add and then remove DC bias to a data signal.
To remove the DC bias is easy (I plan to use a high pass filter consisting of a resistor and capacitor)
However, how do I add the DC bias to the signal?
I did a bit of reading and the following circuit was found:
http://www.ecircuitcenter.com/circuits/opsum/opsum.1.gif
(The picture is from the level shifter from http://www.ecircuitcenter.com/circuits/opsum/opsum.htm)
However, this is described as a inverting summer,which would invert my data signal (Which I do not want)
I would also like to work from a single supply OP-AMP, so I want to keep my signal above ground. Any suggestions?
Regards,
Dollarday