Recent content by mikaeleriksson

Thank you again to all of you for the help, I'll try with the clamp meter, it's worth a shot!

Thank you for all your input! It does indeed seem like a Hall-effect device is my best bet, since the sensing method needs to be non-intrusive. The link posted by meBigGuy was excellent, and made it clear that current sensing methods are either 1) resistive (intrusive) 2) Hall-effect based or...

Hi, I am thinking of ways to detect when an electrical device is turned on and off without actually touching or modifying the existing circuitry. More specifically, I have a hand held device powered by 2 x 9V batteries and with 2 electrodes connected through leads and plugs to sockets on the...

Hello people, I'm a recently (February 2015) graduated medical engineer from Finland. I currently work in product development at a small medical device startup in the brain stimulation field, so I will probably mostly check out and ask about things I've forgotten related to electromagnetism and...