I’m still trying to teach myself (or rather, learn with others’ help) many electronics fundamentals, and I’m always finding new ways to make that happen, even if what I’m building could be done a thousand times easier with different components.
That said, what I kinda wanted to do next was use an Arduino’s PWM output and analog input to manage a switching power supply, perhaps something with variable voltage output and stats on the LCD screen. Does that sound reasonable?
Anyone feel charitable enough to get me started on the right track? I have a handful of N-channel 100v/40A MOSFETs (ST P35NF10) and a “transformer” (normally used for audio) in my Radio Shack project kit. The MOSFET seems to work pretty well to act as a primitive “amplifier” for my PWM audio program using digital output, active with a high signal. Sure would be a pretty cool to build my own power supply…
I know it’d be kinda (okay, really) dangerous to start off trying to build a “mains” power supply, so I’m thinking a safer DC-DC converter first. Since a mains SMPS is really just a DC-DC converter on a much larger scale, I imagine what I learn here could scale up later if need be… I’ll just power it off a 19v laptop power brick for starters.