I built an AC power supply (we called it a TENG) based on the tribo-electric principle. It can light up about a hundred 3 mm LEDs.
Now I want to try supplying the power from my TENG to an LCD thermometer or a small calculator.
As far as I know, I need to install an additional capacitor to the circuit to make it work, but I do not know how to choose the correct type of capacitor.
I will purchase the 400 V type, but I have no idea about the capacitance difference. Would you please teach me how to connect it to the circuit?
I attached an image of my circuit: