DIY something with electronics need some knowledge on the topic

[Frank S]

Just like BuffaloJohn, my takeaway from this video was not what I would consider positive from the standpoint of someone who might not know a lot about regulators, which I do not, however can construct one from a schematic. My take on quote unquote tutorial videos very closely parallels what I would gain from having to sit through a professor's lecture back during my college days. A few of my professors held dear to their hearts the mistaken ideas of anyone actually gaining useful knowledge out of their dry monotone ramblings. Most of us found the only way to extrapolate anything useful from their lectures was to record them then play them back while having to skip forward then backward to create anything near comprehensible of what the professor had said.
I find videos are the just the same, without a hardcopy accompaniment for viewing videos are IMO a poor representation of a presentation.
Oh, as far as controlling noise one way to accomplish this is to strategically incorporate toroidal coils within the circuitry the eddy currents creating the noise can become self canceling.