Is there some simple technique to efficiently produce 120 VDC from a mains 240 VAC supply? All I need is < 50 mA. Can something be done with just rectification and capacitors for example? Large dropper resistor? I want to run a few neon bulbs in DC mode.
I only actually need one neon to run, but can have others if it makes the cicuit simpler vis a vis total voltage drop. I think a single neon bulb draws only about 1mA.
Appologies all, but thanks for feedback. I think that this question is very badly put. It's not the power supply per se that I want, but the neon bulb to run at DC current. Should I ask another, better question?