Using an NPN transistor instead of a reed-switch ...

[Omnibus]

One more thing, is a pulse generator the same as a frequency generator ? Can they do/are they the same thing ?

Yeah, that's basically the same thing. Also, please see the Steorn demonstration I was telling you about. It isn't explained well during the presentation it seems but the principle of measurement is as I mentioned it earlier: http://www.youtube.com/steornofficial#p/u/1/7wIjNJH0Cpw

[DeepCut]

Thanks Omni, watching it now

[DeepCut]

Thanks again Omni.

Excellent video, learnt a lot there, and from naudin's steorn-related experiments and document links - magnetic viscosity.

Nice that it all stemmed from an observed anomaly !

My function generator kit should arrive tuesday :

http://www.maplin.co.uk/Media/PDFs/N42FL.pdf

Looks to be low-current but i can change that with some circuitry.

Just realised there is no duty-cycle control on this kit

May cancel order as duty-cycle is a must, surely ?