Quote:
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Originally Posted by MAX
don't work for water or metals, just find AC noise.
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You did not answer my questions:
Quote:
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Originally Posted by J_Player
Are you sure the devices you built had a low pass filter and were optimized to look at low frequencies below 1 HZ? What were the resonant frequencies of the noise you found?
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Ok, now what was your low pass filter cutoff point? what was the resonant frequency of the noise you heard? Was the AC noise below 1Hz like I asked? Or was it above 1 Hz? How many db attenuation did your circuit have for frequencies above 2 Hz?
Best wishes,
J_P