A larger capacitance makes the neon glow brighter. All this for no money at all. The neon lights only when there is an efficient Earth present. This works well at the author’s home, with Live or Neutral either way round. In the Elektor laboratory based in The Netherlands, some concerns were expressed as described in the June 2011 issue [1], as the schema was sensitive to the relative positions of the Live and Neutral. So the Earth fault detector can also be used as a Phase detector, but probably in Belgium only.
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The whole thing can easily be incorporated into a power socket; the author used a small transparent cover to protect the neon.
The whole thing can easily be incorporated into a power socket; the author used a small transparent cover to protect the neon.
Note. As opposed to the UK and the US, some AC power outlets in Belgium and all in The Netherlands are not polarized, i.e. AC power plugs (both earthed and non-earthed) can be inserted either way around.
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