#Transistors—the bedrock of every smartphone, computer, satellite, and artificial-intelligence platform—did not emerge from a business plan or product pitch. By tracing their history, Julia R. Greer argues for the importance of investing in basic science.

What might the next transistor look like? And how do we make it happen?

Learn more: https://www.technologyreview.com/2025/09/08/1123214/opinion-basic-science-research-funding/
#technews #funding #computing #science

P-type semiconductor? N-type? NPN? #CMOS ? #silicon is dope!

And you can build and simulate #transistors yourself: https://app.siliwiz.com/?preset=nmos

I bought Last Call BBS from Zachtronics to learn, but it's a game, simplified to the point where capacitors discharge instantly.

Meanwhile, siliwiz is used as a tutorial for designers of actual circuits in Tiny Tapeout:

https://tinytapeout.com/siliwiz/resistors/

Brb, redoing game challenges in simulator.

#electronics #circuits #chip #cad

#Transistors. How do they work?

I need to make a switch which has LOTS of resistance when off, but *little* when on. How can I thread that needle?

MOSFETs have great on resistance, but they leak a bit much current. I need <1µA.

Bipolars don't leak a lot, but they also don't conduct enough.

Both parameters eat into the same property of my circuit from different directions.

HELP!

#electronics #askfedi #mosfet

#PlaneAlert ICAO: #A597EE Tail: #N46GX Flt: #N46GX
Owner: #TexasInstruments
Aircraft: #Bombardier Global 6000
2025-11-19 15:03:32 CET
#GLEX #Semiconductors #Transistors #Ti88 https://en.wikipedia.org/wiki/Texas_Instruments
https://globe.adsbexchange.com/?icao=A597EE&zoom=7&lat=33.471451&lon=-99.547173&timestamp=1763561012&showTrace=2025-11-19

#adsb #planefence #planealert by kx1t - https://sdr-e.com/docker-planefence

I can safely say that it's been a while since #DigiKey sold #resistors in pre-packed bags of 5 with included card labels. As their own brand. Made in Taiwan.

Or called themselves "Digi-Key Corporation".

More seriously, I found a bag of #components left over from my senior year of school, when we did our big final project. Mine was a computer-controlled slot machine. Components were seriously expensive then; I organized a group buy with 4 or 5 of my classmates through "Digi-Key", partly because they were cheaper than the local suppliers (see previous story about the "Two Weeks Ten Bucks" guys), but also because we could get quantity price breaks on stuff that was common between our #projects, like the 1 kΩ resistors. IIRC, the resistors cost about $0.30 each in the 5-packs, but the bag of 200 was *way* cheaper - about half that, I think.

These were ordered in 1997, so almost 30 years ago. In addition to #vintage resistors, I found ZTX549 PNP #transistors (still in stock at DigiKey today!), MJE2955T #PNP transistors (also still in stock!), 3 different brands of 741 #opamps, including made-in-Japan and made-in-Malaysia #NEC, TI ones from Taiwan and the Philippines, as well as #TI TL081CP and LM318P from Taiwan. Also a bunch of 74-series logic #chips and some weirder stuff, like a #Motorola MC14412, which is essentially a 0-600 bps (~baud) modem-in-a-chip.

So if you need some vintage components, hit me up 😉

#TexasInstruments #electronics #SupplyHouse #FoundAtHome

Une nouvelle #activite pour encore vous expliquer comment est possible de réaliser une fonction #logique avec des #transistors. Eih oui, la base de l’électronique #numérique est les jonction N et P. Avec #electro-robot, vous apprenez à realiser une #fonction #logique #NAND, appelée aussi #NON-OU, sous un #logiciel de #simulation #électronique #LTspice : https://electro-robot.com/les-activites/travaux-diriges-la-porte-logique-nand

Vous pouvez #également retrouver la fiche #technique du #transistor #2N2222 dans notre #bibliotheques de #datasheet