Home › Magazines › 2010 › July/August › AC Power Indicator

AC Power Indicator

(Summer Circuits 2010 article)

Published in issue 403, July/August 2010

The AC powerline indicator presented here has a complete galvanic isolation from the grid. The indicator is an LED that lights up when a current flows, although the current can be measured more accurately with an AC voltmeter set to its mV range. The detector is a transformer taken from an old mobile phone charger. The value of the secondary isn’t important because we only make use of the primary 230 V (115 V) winding.

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	Magazine July/August 2010
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Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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