Quote:
Originally Posted by ms660
What would the centre tap normally be connected to ?
Lawrence.
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Typical load to have a metal case or metal parts that can be readily touched by the operator / user. So the 0v. centre tap, via the 'E' pin of the 3-pin plug / socket, is to be connected to that metalwork.
There may be a case for connecting that centre-tap 0v. point to the supply earth, but that is a contentious aspect which has been discussed at length here before but with considerable disagreement and without a definitive conclusion. So let's not go there again on that sub-topic; thank you, everyone.
Al.