Thank you Russell for your valuable explanations !

I read them carefully and now this part of the project is clear. Still, I'm
reserved about the size of the capacitor needed : 22mm in diameter is a
little bit high for a power supply integrated onto a PCB. Aren't there any
other solutions to use a smaller size capacitor for a 3A load power supply ?

I would like to clarify one thing: the voltage drop is calculated with the
formula Iload * 8,33 ms / capacitance in mF, and the current ripple that the
capacitor is rated at is the load current ? With what factor should I derate
this ripple ?

If I understood well, should I place a resistor of 30-50 ohms between the
rectifying bridge and the capacitor ?

Best regards,

Lucian

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