Recent content by resonant.freq

Excellent ! 'that it applies only in ac circuits' makes perfect sence... I suppose its just so assumed that it was neglected in anything id read. ... I would still wonder why they chose the term negative ''resistance''...and not another term... never the less thanks for clearing that up.

hmm... I would take it he's using an rlc circuit and as the detecting coil nears the sample the effective inductance of the coil changes, either knocking the rlc circuit out of resonance or onto it?(or simliar). If so it sounds slightly like the design of a common metal detector.

Hello Everyone! I have recently been attempting to understand negative resistance circuits(on a practical level at least to start). I've pulled up a few websites giving actual circuits to demonstrate the principle, but still can't quite understand it. Every circuit example so far shows either...