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Floating 90v AC
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<blockquote data-quote="EMF1" data-source="post: 474815" data-attributes="member: 30948"><p>Hello All,</p><p></p><p>I have a strange issue.</p><p></p><p>I have a double insulated - no earth, phone charger. On one circuit in the house there is about 90V AC between the outer case of the USB plug and earth, earth in the socket or to a water pipe. This is enough to tingle the skin. On all other circuits it is fine. This is reproducible with two different chargers.</p><p></p><p>There is also enough on the TV aerial connector to feel a little belt.</p><p></p><p>My questions are therefore -</p><p></p><p>How is this even possible? I could understand if there was an earth core which was in contact with the live - but just live and neutral going through a rectifier and transformer?</p><p></p><p>How do I go about tracking down when this leakage is coming from?</p><p></p><p>Thank you.</p><p></p><p>Just to add - the TV signal goes through a mains powered amplifier.</p></blockquote><p></p>
[QUOTE="EMF1, post: 474815, member: 30948"] Hello All, I have a strange issue. I have a double insulated - no earth, phone charger. On one circuit in the house there is about 90V AC between the outer case of the USB plug and earth, earth in the socket or to a water pipe. This is enough to tingle the skin. On all other circuits it is fine. This is reproducible with two different chargers. There is also enough on the TV aerial connector to feel a little belt. My questions are therefore - How is this even possible? I could understand if there was an earth core which was in contact with the live - but just live and neutral going through a rectifier and transformer? How do I go about tracking down when this leakage is coming from? Thank you. Just to add - the TV signal goes through a mains powered amplifier. [/QUOTE]
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Floating 90v AC
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