I was wondering what emits electromagnetic signals in the kHz regime? When I touch the inner pin of an BNC cable connected to an oscilloscope, I see a large sinusoidal signal with ca 40 kHz.
I'm working on a 4-layer PCB that has a wifi module and a chip antenna, the antenna is placed at the corner of the PCB and the copper beneath it is removed, I see that via fences are used on the ...
A fun little project I've been working on is an EMF detector using my recently acquired Arduino. It is based off of the guide at http://www.aaronalai.com/emf-detector, primary differences being my own ...