@ThePhoton :)

@TonyStewartSunnyskyguyEE75 I asked this question: electronics.stackexchange.com/questions/476929/… in reddit too: reddit.com/r/AskElectronics/comments/er2pt9/…

and someone told me that it isn't necessary to worried about inrush current

for such "low capacitance" design

what do you think?

I just worked on an 1kW DC supply (25v @ 40A). There was no soft-start nor PTC on the input. With the output set to zero and no load, there was a 50% chance of tripping the circuit breaker when switched on (due to inrush current.) This is ok! Because it was meant to be powered from a 30A breaker, and I was using a 15A breaker.

The peak current is many times this, but for a few AC cycles, it doesn't matter to the health of the supply. It was properly fused, and being "slow" fuses, do not open erroneously. Still, if I were engineering the thing, I would've implemented soft-start.

But for a "small" DC supply, it's overkill I think.

Using Falstad Circuit Simulator, is there a way to place an depletion type MOSFET? I only see the N- and P-channel enhancement types in the dropdown.

@Rev1.0 Can you set the threshold voltage of the FET? Just set it less than 0 for NMOS or greater than 0 for PMOS, and you have a depletion mode device.