- #1
PhysicsGuy99
- 9
- 0
Hello all,
I am looking for a means of AC-coupling a current input to an amplifier http://www.thinksrs.com/products/SR570.htm . I found some methods to do this with a simple op amp set-up, but I am not sure how to accomplish this with this instrument. The reason I want to remove the DC current component is because I am trying to measure a very small (~6 orders of magnitude smaller) AC signal riding on the DC signal. The instrument does allow for a 0 to +_5 mA offset, but this is not a large enough range for my application. It seems that there is a potentially simple solution to this problem that I am overlooking.
Any insights would be much appreciated!
Thanks,
Alex
I am looking for a means of AC-coupling a current input to an amplifier http://www.thinksrs.com/products/SR570.htm . I found some methods to do this with a simple op amp set-up, but I am not sure how to accomplish this with this instrument. The reason I want to remove the DC current component is because I am trying to measure a very small (~6 orders of magnitude smaller) AC signal riding on the DC signal. The instrument does allow for a 0 to +_5 mA offset, but this is not a large enough range for my application. It seems that there is a potentially simple solution to this problem that I am overlooking.
Any insights would be much appreciated!
Thanks,
Alex