Electronics Design

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nice little 80v switcher

https://www.ti.com/product/LMR38020 Raw supply voltages seem to be going up, into the 50 volt range, so an 80 volt swit...
0 comments posted 2yrs
posted by jjSNIPlarkin
0 comments posted 2yrs posted by jjSNIPlarkin

gnarly PCB

https://www.dropbox.com/scl/fi/fiy73ou127rd5hi23jkw9/P948_A6.jpg?rlkey=symijy4b0veq1s5ho982r0sa0&raw=1 My layout guy is...
6 comments posted 2yrs
posted by jjSNIPlarkin
6 comments posted 2yrs posted by jjSNIPlarkin

A Complex Metaphysical Conundrum

Gentlemen, This is an exam question that trips up even some of the best students. See what you make of it! Q: Is this s...
42 comments posted 2yrs
posted by cd
42 comments posted 2yrs posted by cd

Philips TL-S bulbs

Hey all, I have an old rail car design that used ballast-free florescent tubes in a 600 VDC circuit; bulbs used in seri...
4 comments posted 2yrs
posted by mocha
4 comments posted 2yrs posted by mocha

Inductance meter for BIST

I can build this into my new programmable inductor module, for self-test. With a 1% cap, it should be plenty good. L ra...
11 comments posted 2yrs
posted by jl
11 comments posted 2yrs posted by jl

Eclipse

A pretty good partial eclipse is just ending here. We had about 90% obscuration here. George H should have been in the p...
14 comments posted 2yrs
posted by pcdhSpamMeSenseless
14 comments posted 2yrs posted by pcdhSpamMeSenseless

lithium explosion

https://www.bbc.com/news/uk-england-london-68744317 It doesn't look like that one was charging. Lithium battery fires a...
42 comments posted 2yrs
posted by jl
42 comments posted 2yrs posted by jl

eclipse cookies

https://www.dropbox.com/scl/fi/pyiqqc1ebgjmumasfaxu6/Eclipse_Cookies.jpg?rlkey=u0odh6zjyo108djay5i33q0hc&raw=1
2 comments posted 2yrs
posted by jl
2 comments posted 2yrs posted by jl

Scope Probes off Ebay

I never learn. I bought a used "Agilent 500Mhz probe" off Ebay for 50 quid as the highest bandwidth probe I thought I h...
11 comments posted 2yrs
posted by cd
11 comments posted 2yrs posted by cd