I have this power supply which is part of an energy meter design already on PCB, and undergoing some tests. It passed all tests except the one that requires it to run at 60% or rated voltage, 240V, which gives us 144V
The AC supplies 240, the transformer output gives 6V, and the LDO gives me 3.3V.
HOwever, at 144V, the input of the LDO is just about 3V, giving me no output.
I want to know the easiest way to make this work.
Thanks.