Stanford University researchers have made a solar panel that works at nighttime! It will reduce or eliminate the need for battery storage! TAKE THAT Big Oil! You can probably guess how it works… Let’s BUST this impractical boondoggle wide open. The research paper: https://aip.scitation.org/doi/pdf/10.1063/5.0085205 Forum: https://www.eevblog.com/forum/blog/eevblog-1466-stanford-solar-power-at-nightime-busted/ 00:00 – Pulitzer prize winning twitter Blue Checkmark time ...

It’s been a while since the dumpster has delivered a computer. Today we get a HP Proliant ML350p Gen8 xeon server. Does it work? Forum: https://www.eevblog.com/forum/blog/eevblog-1466-dumpster-dive-xeon-server/ Youtube: Odysee: Utreon:

How you can use your multimeters capacitance range to measure inductors, using the reciprocal method. Forum: https://www.eevblog.com/forum/blog/eevblog-1465-measure-inductors-using-a-multimeter/

The TOP 5 Jellybean comparators, plus a bonus and special snowflake choice. 00:00 – Jellybean Comparators 01:20 – Traps for young players using Opamps as comparators 04:43 – Is the old School LM311 still THE jellybean? https://www.ti.com/lit/ds/symlink/lm311-n.pdf 11:17 – TS391 Small single comparator https://www.mouser.com/datasheet/2/389/cd00001660-1795546.pdf 16:33 – LM393/LM2903 Dual comparator https://www.ti.com/lit/ds/symlink/lm393a.pdf 21:27 – LM339/LM2901 Quad comparator ...

What’s in Dave’s Mailbag? Forum: https://www.eevblog.com/forum/blog/eevblog-1463-mailbag/ SPOILERS: 00:00 – Mailbag Bonanza! 03:24 – 3M IDC Crimping tool 04:57 – Bulova Accutron Watchmaster battery tester 06:52 – The best button EVER! 07:24 – Continentak Specialties Corporation breadboard 07:53 – Moving Iron AC ammeter 09:29 – Analog Devices power brick 09:57 – Heathkit Digital Design Experimenter 15:31 ...

Don’t buy the new Dymo 550 or 5XL label printers, they now use DRM NFC/RFID technology in the paper rolls to force you into using their labels at 10 TIMES the cost! EFF: https://www.eff.org/deeplinks/2022/02/worst-timeline-printer-company-putting-drm-paper-now NXP NFC chip: https://www.nxp.com/docs/en/data-sheet/SL2S2602.pdfSLRC610 RFID/NFC frontend: https://au.mouser.com/datasheet/2/302/SLRC610-1127743.pdf Forum: https://www.eevblog.com/forum/reviews/dymo-550-thermal-printer-drm-hacking/ Photos:

Join Dave in the search for an alternative replacement MOSFET. It might not be as easy as it sounds. Talk about how to identify components and circuit function, MOSFET parameters, and using google and parametric searches on supplier and manufacturer websites. Can YOU find a -30V 17A P Channel SO-8 MOSFET *WITH* ESD protection? Forum: ...

Dave repairs his failed Aputure Amaran HR672C LED studio light which is mysteriously killing batteries and falsely indicates charging when no batteries are installed. And salvaging the spare part from an old dumpster laptop! Forum: https://www.eevblog.com/forum/blog/eevblog1460-interesting-repair-of-an-aputure-amaran-led-studio-light/

Is it worth salvaging parts from a consumer HP office Inkjet Printer/Scanner from the dumpster? Forum: https://www.eevblog.com/forum/blog/eevblog-1459-is-it-worth-parts-salvaging-an-inkjet-printerscanner/

Can’t see those pesky laser etched part numbers on chips? Dave demonstrates what’s happening with the microscope polarising filter lenses on Twitter that’s blowing people’s minds. Does it actually work? And other tricks of the trade. https://twitter.com/azonenberg/status/1494061604161220615 https://twitter.com/ghidraninja/status/1494343655053832203 Aputure Amaran AL-M9 LED light https://amzn.to/3H0O5KW Leica microscope brochure: https://downloads.leica-microsystems.com/Leica%20LED3000%20RL/Brochures/Leica%20LED3000-5000_Brochure_EN.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1458-microscope-polarising-magic!/