Math Formula to calculate DC power supply capacitor value?

schmitt trigger said:

Indeed, Nigel, that was the first step.
But eventually they went with fuses embedded inside the transformer itself.

Click to expand...

They added thermal fuses inside the transformer, but any sort of 'equipment' still kept a proper mains fuse as well, it was mainly the cheaper wallwarts that dropped the fuse entirely and relied solely on the thermal fuse.

A thermal fuse in the transformer isn't offering the same protection as a mains fuse.