MarkKhusid

EE in Buffalo. Power electronics, LTspice, Fortran for simulation. Grad student at 50.

[MarkKhusid @markkhusid]

I'm Mark Khusid, an electrical engineer in Buffalo, NY. 10+ years in PSpice/LTspice, and currently taking ASU's EEE 572 while working.

I'll post practical power electronics, LTspice simulation, and some Fortran for simulation kernels.

Projects: https://t.co/zfMPGfiB0p

[MarkKhusid @markkhusid]

LTspice tip: if a PWM controller model errors out at t=0, ramp VCC up with a PWL or PULSE source instead of a plain DC source.

That's what got my TL494 test jig simulating cleanly.

What's your go-to fix when a sim won't start?

https://t.co/Yys6P9Nau8 #LTspice

[MarkKhusid @markkhusid]

@eligaultney @davepl1968 Just be honest about it. Reverse engineering code and deriving benefit from it is piracy. You spend labor and capital to develop a product and the someone pirates it to get the benefit but now they are way ahead on labor and capital.

[MarkKhusid @markkhusid]

Introduction to Programming Using Fortran 95/2003/2008 by Ed Jorgensen. Free, from the Open Textbook Library.

I work through its examples in Jupyter Lab with fpm: a period calculator, sum of squares vs. square of sums, line numbers, estimating pi.

https://t.co/T1rvCKGxF0

[MarkKhusid @markkhusid]

@EliLebowicz Yes, I read that in the Midrash Raba and found it to be an excellent argument.

[MarkKhusid @markkhusid]

@cqcqcqdx Looks like the insulators failed and a phase to tower fault occured.

[Vivid.🇮🇱 @VividProwess]

This really needs to go viral.

One of the best videos on the internet.

[MarkKhusid @markkhusid]

@tetsuoai That was such an awesome book. Front!

[MarkKhusid @markkhusid]

@IsraelIDFend Shame. I used to like his music. No more.

[MarkKhusid @markkhusid]

@cqcqcqdx There is a third edition + X chapters. I have them at work.

[MarkKhusid @markkhusid]

@ViralNewsNYC This is f'd up. I have lots of friends and family in that area.

[MarkKhusid @markkhusid]

@koshercockney To be fair, the same happened in the US.

[MarkKhusid @markkhusid]

@koshercockney Soon, she will be wishing that church still stood.

[MarkKhusid @markkhusid]

@EmmanuelMacron Your country is on fire. Save it.

[MarkKhusid @markkhusid]

@tetsuoai Yeah. I ran out of grok bot usage for the first time this week. Had to reup twice already. It is indispensable!

[MarkKhusid @markkhusid]

@neiltyson Data isn't knowledge. Knowledge isn't wisdom.

[MarkKhusid @markkhusid]

@ViralNewsNYC I used to live on U and 5th, and shopped near U and 15th for many years. Know the area well.

[MarkKhusid @markkhusid]

@xjet You will need that many to build a base on the Moon. Why build a base on the Moon? Mass drive SI satellites into orbit.

[MarkKhusid @markkhusid]

@EPC_Corp Does the radiation dose mostly shift the GaN threshold, or does it change the loop compensation too?

[MarkKhusid @markkhusid]

@EDNcom At what frequency do feed-through caps really start beating a regular MLCC with short traces?

[MarkKhusid @markkhusid]

@NavitasSemi @MicrochipTech Is that 800V to 6V in a single stage, or is there an intermediate bus in there?