Re: Problem using toroid

[John Smith]

Hi Peter


I think that is the ringing you are seeing, and the other background


noise might be helped with screening the toroid with aluminium foil?


dont let it get through the centre of the toroid or it will make a


shorted turn.


Cheers


John


-----------------------------------------------------


Cavalier Electronics


L'Agulhas


South Africa


Hi John,


thanks for your answer.


I just looked to my recordings to examine the frequency, it has


been about 750Hz. This is rather 1/3 of the


expected proton frequency!


The expected 2075 Hz was not to see on the scope. So I guess the


water inside the toroid isnt enough magnetized.


I'm rather sure of this because I can hear a noise coming from the


amplifier and filter which sounds like


a starting, a "pinging" oszillator at about 2khz and interferes


with any other signal (may be the proton signal). Its interesting


that this interference is allways there (without charging the


coil!) and varies in frequency (maybe 2-3 Hz) without any period,


its like a chaotic change. Maybe this comes from the geomagnetic


field. I have to do some more experiments on the weekend.


Greatings to South Africa from Germany


Peter (DG4EK, JO30KG)