Comments by "yxyk" (@yxyk-fr) on "Asianometry" channel.

  1. 21:00 Mataré and friends invented/discovered the point-contact transistor separately and almost simultaneously ... They didn't even try to "copy" it, in fact Shockley was shocked that the French Telephone company would use their own design for long distance transmission with better quality than in the US. The story on the Soviet side is more murky and convoluted, due to paranoid secrecy and duplication of works because the labs were strongly compartimented.
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  2. and then Intel, AMD, you name it...
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  3. 13:47 we have TGVs in France, they are pretty fast ;-)
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  4. are you referring to https://www.youtube.com/watch?v=XLlIb_p11cM ? Part 2 : https://www.youtube.com/watch?v=fRCqhSONNiE
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  5. surely, there are only 23 minutes to cover the story... Feel free to complement with more facts (not opinions).
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  6. "one last time". NO. PLEASE. You'll always find amazing things to say and this subject/domain is crucial and fascinating so please go on and on and on 🙂
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  7. take pictures of it !!!
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  8. 1N34 is common too 🙂
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  9. You can start with a FPGA prototype 🙂
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  10. the CIA was created 30 years after that event 🙂
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  11. 2:43 THAT BOOOOK !
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  12.  @v8pilot  YT wipes links in comments :-(
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  13. levgenmajor, if there are factual errors, you're free to make your own video(s) to explain what was badly reported.
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  14. "because he correctly understood certain facts about human beings" which things ? have you heard about the "Nobel disease" by the way ? Maybe you agree with eugenics and he's "right" in your eyes. but which of you are geneticists ?
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  15.  @Doctorlockpick  we learn better from our mistakes 😀
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  16. I'm anti-tease 🙂
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  17. yes, that's part of the Seymour Cray early legends. But as soon as he/CDC could, they ordered custom gold-doped 2N709 silicon NPNs from Fairchild 🙂 (corrected, thanks MrGGPRI)
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  18. Then why did it take so long for them to reproduce the amplifying devices when they were hired in France ? Can you please provide us with more information ?
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  19.  @Schlipperschlopper  ultra-high-purity crystals are indeed extremely hard to make. It's a shame that the French had abandoned semiconductor fabrication by the 60s. According to Mataré's testimony, he only isolated the "transistor effect" in mid-1948, there is no mention of anything before. I'm sure it would have been common knowledge otherwise. So I am looking for as many hints and clues and references as possible. Thanks !
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  20. in short : FET became possible because 1) ultra-high-purity crystals 2) epitaxy
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  21. what.... are you..... trying..... to say......................
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  22. your best bet would be "alloy method", using pure germanium slabs and indium beads, heated in oven. more reliable and performant and easier to manufacture than pesky, vibration&humidity-sensitive cat whiskers.
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  23.  @debrainwasher  " to attempt to violate Pauli's inviolable exclusion principle " yeah, rules are made by Nature to be broken 🙂 Now why 1.6GHz and what power is required ?
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  24. If not for being near his family, why did Shockley go to California ? there was his university, IIRC. But what other reason do you think motivated him ?
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  25. Similar to the "prions" of the "mad cow disease"...
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  26. mostly true but somewhat misleading. Yes Bell Labs failed to mention Lilienfeld's work and that was a point of "conflict". But Shockley (and the whole Bell Labs team) discovered a different type of transistor effect (carrier injection, not field effect). So one misleading aspect of your comment is that there would be one type of transistor. Furthermore, Lilienfeld's design was "too advanced" for the current technology, it was invented but the available methods and processes didn't allow it to work. the BBS team explained why. And about 20 years after, working FETs worked and were sold.
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  27. they are still 40 bucks... on eBay :-D fuzz pedal makers crave them.
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  28. it's ... "complicated".
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  29. and it's very abridged, since the story is way more elaborate :-) it would take hours...
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  30. There are several documentaries such as PBS' "Transistorized!" https://www.youtube.com/watch?v=U4XknGqr3Bo and others, such as a Japanese retrospective. longer, less technical but has some extra context.
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  31. indeed, some people managed to make (short-lived) transistors using 1N34 point-contact Ge diodes. in fact the Germans created the "duodiode" during WW2, that paved the way to the French-German branch of bipolar transistors development (see Mataré).
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  32. he works hard for them.
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  33. Meanwhile in Japan : https://www.youtube.com/watch?v=ihkRwArnc1k
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  34. Roswell happened in Roswell. The bipolar transistor effect was discovered independently by at least 2 teams (Bell Labs, and France/Germany). your story doesn't match actual history.
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  35.  @MostlyPennyCat  As for the prototype queue, this exists since the early 80s as MOSIS. Since 2020, the Google-Skywater collaboration uses a "MultiWafer Project" service from efabless.
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  36.  @Schlipperschlopper  That doesn't make sense to me... Mataré died in 2011, well after the world was changed by the transistors. even after the collapse of the Soviets, he couldn't have been tied to contracts by then. So he could have rectified things in his biography and in interviews, as the German research and the Transistron resurfaced in the last decades. What are your source ?
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  37.  @Schlipperschlopper  furthermore : As soon as Bell Labs disclosed their transistor, the Mataré team rushed to patent their own version before Bell Labs, so there was no attempt to hide their progress, on the contrary. The French wanted to brag as much as they could so they could have countered with their own side of the story (even though it included foreign sources, but they were happy to "benefit" from them).
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  38.  @Schlipperschlopper  Please, can we remain on topic ? nuclear research is a totally different topic, and the US military cleared Bell Labs before transistors were announced. Furthermore, the research in human flight is weeeelll documented, and only before WW1 was it militarised, so people like Lilienthal or Clément Ader are not forgotten. I would like more references about WW2 era research on semiconductors.
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  39.  @Schlipperschlopper  who is "we" ? Do you have any link ?
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  40. Don't stop yet ! the suspense is killing me ! ;-)
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  41. not really working, patents had been submitted but crystal purity was lacking.
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  42. Sure........ tell us now what you expect them to reply ?
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  43. dear @cjay2 , by "musicians", do you mean "all musicians" ? Because I don't count myself in this "elitist nostalgic" crowd. I'm an electronics engineer and a musician so I'm not swallowing audiophool memes easily.
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  44. I see @edwardmonsariste4050  So it's only for guitar, and for overdriven signals. Fancy. And "under rated speaker" sounds like a design defect to me. When you clip your signal, you're free to call this music. But there is a whole world beyond that, where you're good with 6dB of headroom before you saturate your microphone or preamp. Since tubes, the electronics world has evolved so much beyond the dynamics of magnetic tapes.
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  45. Now THAT's an interesting comment ! This fabrication method has long been forgotten...
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  46. that's right :-) IBM used the junction transistor symbol, for a while in the early 60s, and dropped it later...
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  47. 15:11 are they ?
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  48. ​ @newbiex11  Quantum mechanics were quite well understood in the 40s. In fact, Schottky laid out the theory that was later used by Bell Labs. I did my own research several months ago 🙂 Remember : Bell Labs tried to make a FET, and failed, so they had to resort to quite a lot of theoretical and engineering works to get one.
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  49. The obligatory vintage documentary from AT&T : https://www.youtube.com/watch?v=WiQvGRjrLnU 🙂
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  50. Damnit ! I did a thorough research on this historical subject several months ago 😀
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