I just want to confirm my suspicions.
I recently read an article by Forrest Mims regarding using LED's as light detectors. I decided to see how my cheap chinese LED's would react so I plugged 2 wires into 2 adjacent rows on one of my bread boards. Connected my DMM to them. I then selected 1 of each color LED from my kit which contains 5 different colors (Red, Blue, Yellow, White and Green). I noticed however, that I was getting stray voltage readings with nothing connected in the bread board. I decided to record a series of 500 readings to see what the min, max and average of them would be. This is what I got:
| Min | -0.0003 |
| Max | 0.0001 |
| Average |
-0.000025 |
I suspect, but would like someone smarter than me to confirm, that this is stray EMF in my lab. I have a window AC unit running, my computer, a florescent light, etc. Am I correct in my suspicion? How might I confirm this, other than asking that is?
Thanks
Charlie
