This is my first post to this forum. I'm struggling to design a transformerless power supply. It connects to the mains (220V AC) and I need to get 5V, 3A DC. The reason for me not inserting a transformer is that I've got very limited space to place the final design in. Yeah I know it's very high current and that's why I'm struggling.
Any ideas how to go about?
And doing voltage division with caps isn't working for me either, I can't find high voltage caps with a high farad reading. The largest I could get was 4.7uF 600V and that doesn't work when I'm pulling 3 amps.
you won't get more than some hundreds mA with a transformless power supply. that's it.
now you can take a look at smps as FvM said. they are now very compact.