Zeta Syanthis @zetasyanthis@awoo.space

@Felthry Man, I'm spoiled at the lower current end, where you can just run at a few MHz and not care in converters. Can see why you don't do that at the higher end though.

@Felthry And since you're doing EMC work, the sheer "oh god what" in this will make you laugh. :P https://www.youtube.com/watch?v=S5uiupJQc9M

@Felthry *nodnodnods* Although now you're giving me flashbacks to designing a 150A rated H-bridge a while back for some student robotics work. (Mine was the first our team designed that didn't just fucking explode when the motor stalled out. XD)

@Felthry And this kind of thing might work as an analog optoisolator too, depending. https://electronics.stackexchange.com/questions/126610/need-an-optocoupler-for-getting-directly-proportional-output-galvanically-isolat

@Felthry Hahaha. Oh god. IGBTs please! XD

@Felthry Yeah, fair. (And sorry, just thought that's a really cool problem and started digging into it. XD)

@Felthry I mean, you can do the tried and true "put a nice ADC on the board with the op-amp" and then run the digital data through an optoisolator?

@Felthry Actually, yeah, that could work. You could A/C couple off the current sense resistor before driving an op-amp with it, potentially. Definitely want some limiting resistors on those lines, too.

@Felthry I mean, there are current transformers too. (I checked digikey, but those go up to about 1 kHz max at the current you're wanting.)

@Felthry And mine research and development definitely was classified, hence not saying exactly who it was for. :/

@Felthry Yeah, that's fair. I stayed on for a while doing some work for NASA for similar reasons.

@Felthry Actually, I suppose I should say "a different organization in the IC," since ONI definitely qualifies.

@Felthry Ah, dang. They have a few probes with different sensitivities. Might be another can help.

@Felthry (Technically they gave it to a third party government who then did what they wanted with it, but that's still not what I signed up for, or was okay with.)

@Felthry I feel you 100%. I used to work for the IC (at one of their contractors) and left that forever after they used one of my devices to launch air strikes at people. :(

@Felthry AHA, that makes perfect sense!

@Felthry Oh, oops! And okay, that's pretty neat! I've dealt with 12V DC distribution in computer racks before (and am dealing with it now a bit), but nothing on the scale of a ship. (I think these power shelves are about 15kVA each. Unsurprisingly, Delta makes them.)

@Felthry I'm not that surprised. Even Lecroy rebrands some of their probes.

@Felthry XD

I'm also a little curious what this is for. I've designed buck regulators before (and was actually working on a few just the other day), but 100A is quite a bit.