How to make AC Tester | Mains Voltage Detector Circuit | DIY

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----------------Little information about Video------------------- contact less AC mains voltage detector circuit which can be used to detect presence of AC mains voltage without any electrical contact with the conductor carrying AC current/voltage. Thus it can be used to detect mains AC voltage without removing the insulation from the conductor. Just take it in the vicinity of the conductor and it would detect presence of AC voltage.

This is a circuit for an AC mains voltage detector that has an insulated sensing probe of length between 5 cm to 10 cm. ... https://www.youtube.com/watch?v=nO_Gdnes7A4