Very logical design approach... I am planning to use a MKT capacitor rated at 63v (for my circuit) is this the same flavour that is used for the "Mains" transformerless Power supplies?

Also, I have seen a few circuits where the input is passed through the capacitor and then a fullvawe rectifier, what would be the advantage of doing it this way.

Well hopfully, will have something built by the weekend. :-)

Volkov