Quote Originally Posted by Justloadit View Post
Just a point to note. The "Gnd" symbol in electronics, does not necessarily mean that it is a earth Connection.
It means a common point for all the electronics of the respective schematic which are tied together.

In the circuit shown above, joining the electronics to earth would destroy the bridge rectifyer.
Yes i agree need to remove that symbol these circuits are all double insullated i have repaired quite a few of these supplies extreme care should be taken on these dropper supplies as the low voltage side is not mains insulated the series resistor on the neutral side is for current limiting that normally go open curcuit and some mov's either burn black and open curcuit but the x rated capacitor on the live side normally survives. These supplies work but with all the spikes we experience during load shedding i replace quite a lot of day/night switches and motion detection lights. These supplies can only work on low current devices but not the most reliable.