I built a simple, direct-coupled mains power supply.
I wish to get on my load about 6V and 20mA DC. My mains is 220V AC.
I used a 1uf 250V capacitor, a bridge, a resistor, and two 100uF tantalum capacitors.
The 1uf /250V capacitor (NP) works well, and I got about 7VDC. However, I need a...