[doug_life]

How would you suppose he tests for EMI? He says he is using mostly power supply modules which will have some thought already put into EMI suppression. Beyond that, if the system works why should he worry about EMI? To take any quantitative measurements would require a chamber and calibrated instruments. This is akin to asking why a hobby software project doesn't have full coverage unit testing.

[exmadscientist]

>He says he is using mostly power supply modules which will have some thought already put into EMI suppression.

He is not. MAX776 are controllers, and older ones at that. These require some skill to apply effectively. I wouldn't do it this way, I'd look at the LMR36xxx series (and friends, you'd want the 60V switches here) sync bucks for this. Hot loop on die = goodbye EMI!

[gaze]

Also if their layout wasn’t a total mess I don’t imagine it’ll be too bad.

[amelius]

If a software engineer said: this Rust code leaks a bit, but it shouldn't be too bad, you only have to restart it once a day, then what would you think of it?

[gaze]

so glad to hear none of the code you’re working on has ever leaked, even while it’s in development and being worked on. what the hell is wrong with you?

[amelius]

The point is not whether my code has leaked or not, but whether I was even aware that leakages are a possibility. I'd be happy if someone pointed it out, even if not entirely in the correct tone.

[gaze]

You’re pointing out an extremely common issue with switch mode power supplies. It’s so common that it comes off like you’re calling the author an idiot. It’s not helpful —- you’re 100% not at all being helpful.

The way to be helpful would be to LOOK at the layout, component choices, and design, and suggest changes, but you’ve done nothing of the sort.