General > General Technical Chat
22-year old builds chips on his garage
mnementh:
--- Quote from: schmitt trigger on January 23, 2022, 04:39:12 pm ---
--- Quote from: mnementh on January 23, 2022, 03:50:12 pm ---I'd suggest that where this idea could shine is in production of legacy semiconductors which are no longer possible because mass-production tech has changed so much in process that the result really isn't the same device.
Just an observation; As always, take anything I say with a grain of salt big enough to pickle a dwagon. ;)
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I am sure there would be a market for the LM3909 LED flasher, among other retro ICs... ;D
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http://www.circuitous.ca/LM3909.html
mnem
*impairing productivity since nineteen mumblety-mumble* >:D
T3sl4co1l:
Yup, have been following for a while, a Wired article is great success. :-+
Would also be interesting to see affordable fabbed amorphous or poly transistors on glass; the performance might be poor, but when all you need is a few MHz equivalent bandwidth or clock rate, then you can miniaturize the hell out of it. Like I could make this whole module,
in a single chip; the board is only needed because no one makes a chip that does the whole function by itself (it's a not-uncommon function, but chips only ever have it along with a bunch of other inseparable housekeeping functions).
Or epitaxy on sapphire, if you can get wafers of it at good enough purity. (Artificial sapphire isn't too expensive by itself; in fact you interact with it on a regular basis, it's the scratch-resistant windows on checkout machines.) Doing this in Si is still going to require vacuum apparatus, with CVD or sputtering; doing it with compounds like ZnS however could potentially be prepared in atmosphere.
Tim
mazurov:
--- Quote from: barycentric on January 23, 2022, 09:19:37 am ---Boutique garage chips will only ever be educational
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I dated a woman who was making me back diodes in the kitchen, on GaAs wafers. I don't know where you can get a back diode these days other than inside some very expensive detector.
Her comment on Jerry Ellisworth video was "She picked an easy target. Any monkey can do this".
mazurov:
That's beyond the point I was trying to make. The point I was trying to make is this: Every generalization is wrong (including this one). Boutique chip shops are doing all right (I'm familiar with more than a couple), and many things can be done in the chicken coop if you know how. When one of the boutique shops I'm familiar with went belly up the principals bought about the half of the equipment, with cash. Pumps, reactors, etc. I wonder why.
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