I designed a low D/C current measurement instrument and was asked yesterday if the instrument can also measure tiny A/C currents. It can and I posted up a video with details about it.
http://www.youtube.com/watch?v=iGOt4mu39s4
the original video about the instrument
http://www.youtube.com/watch?v=YfB1hZ44B20
http://www.youtube.com/watch?v=iGOt4mu39s4
the original video about the instrument
http://www.youtube.com/watch?v=YfB1hZ44B20