Comments by "" (@Gameboygenius) on "Asianometry" channel.

  1. Ok, let's try to identify some of these images for fun. 0:06 A DC/DC converter module of some kind. Transformer and optocoupler in the middle of the board to isolate the primary (right) form the secondary (left). Could be for use in telco for converting 48 V to a local voltage like 5 V or 3.3 V for example. 0:13 Some analog chip produced by PMI (Precision Monolithics). Could for example be an opamp. 0:31 The title "analog delay" combined with delay stages taking opposite clock signals φ_1 and φ_2 points toward a BBD (bucket-brigade delay). This is an analog device delaying an analog signal by feeding it through a series of capacitors which each holds a sample temporarily before passing it on. I don't recognize the circuit. I would've loved for this to be either Serge's Wilson Analog Delay or Buchla's model 277 (modular synth devices) but it doesn't look like it. 2:09 As the title suggests, an analog multiplier circuit. What's neat about this circuit is that it's actually a logarithmic converters followed by a summer followed by an exponential converter. In other words, it turns a multiplication into an addition according to the laws of logarithms and exponentials: a*b=e^(log(a)+log(b)) 2:51 Looks like the same analog delay circuit as in the title card. Through the magic of reverse image search, this turns out to be an early 1976 guitar pedal prototype circuit which inspired MXR delay pedals. 3:05 The title cards for two previous videos. To the left, the board for a HackRF One, a SDR (software defined radio) which can be used to receive various radio signals. To the right, something that looks very much like a computer motherboard, with PCI or RAM slots. 4:27 Looks like a RF demodulator going into an AGC (automatic gain control) then into an amplifier feeding a builtin speaker. Ie a radio receiver. The negative voltage supply (positive ground) combined with liberal use of transformers, suggests a vintage circuit. 5:00 LM317 internal diagram. LM317 is a classic adjustable, linear voltage regulator. The schematic of the internal diagram is drawn in the datasheet. 7:18 Looks like a circuit for exercising your understanding of Kirchhoff's Law in school. Fun stuff. 10:52 A delicious cake, which I'm informed may be a lie. 12:30 Looks like a sawtooth wave generator. The second opamp is setup as a comparator, which will trigger the MOSFET and reset the phase when the voltage goes above 2.5 V, plus a little bit of positive feedback to encourage the opamp a bit to work as a comparator, which it's otherwise reluctant to do. Also, screenshots are hard. 12:44 Not a schematic, but just a note that it's difficult for AI to generate grids apparently. The lines are wobbly and the lines never seem to line up on both sides when they're obscured by some object. 15:18 Interesting. I wonder what this is. Two CPU/FPGA/whatever devices hooked up to memory, by the looks of it. And then IDC headers. This is probably some industrial or test equipment, like the digital portion of an oscilloscope.
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  2. Good video as usual. I'm glad to see that world is gearing up to increase its collective semiconductor capacity. As much as I'm a fan of TSMC, the world can't afford to have a single point of failure for the advanced nodes. And also, you sound sick. Get well soon, my dear deer.
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  3. Just when you think you have a decent grip on the semiconductor industry, another wrinkle comes up. Granted, it's a complex industry, and as an interested bystander, I know that there's much which I know that I don't know. But I don't know how I missed that excimer lasers contain neon as well...
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  4. They didn't zip right through anything. Radioactive fallout contaminated the paper mill that produced sheets of papers used as packaging separators for their x-ray film.
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  5. ​ @lbgstzockt8493 "the entire CPU" is absolutely huge compared to the size of a SRAM cell. Like comparing walking across the block to circling Earth.
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  6. I was curious when NIL was in the news a while back and then kind of forgot about it. I thought this can't possibly work. Both due to the issue of alignment and the issue of keeping the mask defect free. So it turns out the first issue can be solved through looking through the transparent mask and the second issue can (maybe) be solved by just keeping the mask clean. I'm still skeptical because it sounds like an insanely difficult problem, but then I remind myself that everything in semiconductor manufacturing is insanely difficult and done against all odds.
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  7. Watching Asianometry is like solving a jigsaw puzzle. For every video, you find out where one piece fits with another piece.
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  8. And you should never blow in to a NES cartridge that doesn't work. But that never stopped anyone.
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  9. I was just about to sleep when a wild and excited, although I have to say very polite, deer rushed into my room and said: I went to ASML! I guess sleep can wait a little bit.
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  10. A story as old as time, or at least as old as the stock market.
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  11. It's a running gag on this channel. Jon refuses to pronounce it correctly, just for the lulz. Alternative headcanon: He is a deer (according to his profile pic) so he refuses to pronounce it as "deer RAM". Whenever he says DRAM and people comment on it, it shows who has been here long enough to hear it before. Although this must be the record for the number of times he has said DRAM in a single video.
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  12. Yttrium, terbium and erbium are cemented in my mind, but sometimes I lose track of whether 3 or 4 elements were named after the Ytterby mine. And so I have to remind myself whether Ytterbium is an element or made up in my mind to fill in the pattern.
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  13. Thanks for the industry update and the clear explanations of the technology. But oh boy, the humor was on fire in this episode as well.
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  14. It's a problem of economical feasibility. Distilling and purifying noble gas isn't free, and it's a niche market. It would be difficult for the average gas plant to justify competing with what is already the dominant player on the market. Ukraine had cheap labor, and was until very recently, relatively geopolitically stable. And so essentially by chance (probably) it became the country that did production.
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  15. It's his thing. (Closed, WONTFIX)
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  16. No, the chlorine comment is correct. What they found in Los Angeles was that natural bromide ions in the water source, combined with chlorine added for disinfection, and sunlight hitting the reservoir, accelerated the formation of bromate ions. It was previously known that adding ozone to the water could have this effect, but it was a new discovery that chlorine could do it as well. This was the main reason for adding the shade balls to that reservoir.
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  17. Even if you try to aggregate all the data sources, the notion that you can't find concrete information is quite well cemented.
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  18.  @RT-qd8yl  You don't know that until you learn your lesson, and that was the time when the US learned the lesson.
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  19. ​ @conor7154  Thanks for the tip. I tried this on my RTX5090 prototype and Singapore now looks more amazing than ever! The only complaint is the dev's artistic decision to not include trash on the street, which reduces the realism imo. As we all know, this was initially a decision taken to reduce the poly count and allow a stable 60 FPS even on low spec systems. But ever since then this has become a staple of the franchise. I know I can just use the patch by the anonymous modder "K L". But maybe it's time to include the change in the official release as well.
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  20. As the person who requested this particular topic, thank you for a well put together video.
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  21.  @SaretGnasoh  oh, it must hurt the Russian soul that the people of Ukraine want to become a European democracy instead of a post Soviet Russian enclave. Putin is just invading Ukraine so he can claim that Russia is still a superpower when he dies.
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  22. I don't know, I need additional data. I'll need 10-20 more videos on semiconductors from him to give a verdict on the question.
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  23. Yay, another Aussienometry video!
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  24. As someone with an interest Japanese culture, this was an excellent episode. It's one of those stories that feels like a puzzle piece fell into place with regard to how history developed. A language note: issei and nisei literally mean first and second generation. The "iss" in issei is a contracted form of ichi (one) and "ni" means two.
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  25. ​ @Bialy_1 doujinflip's comment was not about purchasing, really. The point was that xraying or running a metal detector over a seemingly wooden object was not something that ran through anyone's head. The idea that that should be done for a random object entering the embassy just didn't exist.
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  26. I've seen the same thing here in Europe. Probably, they're hard at work with marketing the product worldwide. What I think happened is that they're using their super hot varieties to create a viral social media interest in the brand, which then helps sell the plain varieties. Denmark even tried banning 2x and 3x spicy which added to the notoriety. Smart marketing strategy.
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  27. Because they use yellow light as general illumination to prevent damage to things like that are light sensitive. It's basically a kind of darkroom for photography. There are a lot of chemicals and materials in a fab that are designed to cure when you expose it to blue or ultraviolet light. By using yellow light, they prevent such materials from receiving stray photons that could degrade or outright destroy the material before it's ready to use.
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  28. Quac - it does what twinscan't.
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  29. Do it!
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  30.  @the_expidition427  yeah, but not even. The real killer is called economically unviable.
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  31. It's a recurring meme on this channel. :)
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  32.  @slenderman1309  hence "relatively". Russia annexed Crimea and there was a lot of saber rattling and Russian "rebels" in the east. But ultimately goods (like neon gas in this case) could be shipped out and nobody expected a full scale war like this.
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  33. Another great video about how we keep routinely doing the impossible.
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  34. I'm finding evidence of the slides being indexed by Google but not currently available for download. What would be funny is if attendees got a link to all the presentation material but still ended up going the "take a photo" route.
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  35. Always love when another underrated Youtuber I've been following for a long time gets a mention somewhere. Mikeselectricstuff always brings the goods, just like Asianometry.
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  36.  @47lokeshkumar74  he already did two videos on MEMS and MEMS optics.
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  37. Just like with fusion energy and practical quantum computing, it's just 5 years away at all times.
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  38. The allied forces occupied Japan for almost a decade after WW2 ended, so they intervened in various matters.
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  39. I suspect flying a drone over the fab might not end well for you...
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  40. 12:59 I'm disappointed with the glaring omission of the Réaumur and Rømer scales. Personally, I only use temperature scales containing only the consonants r-m-r in my daily life.
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  41. Go back and watch his older videos, 1 year ago and back.
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  42. Practical quantum computers, like fusion energy will always be x years into the future.
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  43.  @bigmedge  nah, it's an all in one radio. Lower left is the tuner, with the dashed line being the coupling to the antenna, and the adjustable capacitor in parallel with an inductor being used to tune the frequency. On the right side you see the amplifier section with a 1 transistor preamp and two transistor power amp, followed by what looks like a built-in speaker. Lots of transformers is just how they built stuff back then because of habit from the tube days, and the price of transistors. Transistors were cutting edge technology, and transformers were something you could manufacture easily with cheap labor. If you could solve a problem without adding more transistors, that's what you did. Today it's the opposite. Transistors, especially in integrated circuits, can be mass produced for almost nothing in a highly automated factory but transformers still require (now more expensive) manual labor.
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  44. Cue the DRAM comments!
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  45. I wouldn't worry about the mirrors. My question is, does a cracked photomask also give bad luck? After all, old superstition was invented before modern technology and might need some updating.
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  46. Would've loved to be there. But I can't just go to Taiwan unfortunately...
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  47. Good video. As usual, well researched and just the right amount of very particular information.
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  48. Leave it to communism to identify a legitimate problem, then completely botch solving it.
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  49. I'd argue the number of holes drilled is a cost driver. You can only drill 1 hole at a time, but whether the board has 1 or 100 through holes it will essentially take the same time to electroplate. On the other hand, boards will still often be "peppered with holes" because even without through hole chips, you need vias. All of this is of course context dependent, what the board was used for and which time period we're talking about. For example, in the early days it would have been much more common with single sided boards, which did not have through plated holes.
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  50.  @FlashMustache  there are different reasons why one might choose HVDC. Minimizing losses over long distances is one popular reason. Asfor the UK, you said it yourself: the grids are not synchronized so they need to convert the electricity to DC and back. Another example is the Brazil-Argentina interconnect, which not only has unsynchronized grids but also different grid frequencies. In this case the DC portion only exists in the substation, a so called back to back DC substation.
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