Age makes you more cautious.
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Age makes you more cautious. I used to carry Debian CD's with me & do all my upgrades while in flight without electricity or Internet — just to test myself I could hack my way out of a screwed up GRUB or problematic #Linux build.
I'm taking my spouse's laptop all the way from #Debian buster to trixie this morning (going through bullseye to bookworm first), & I'm actually nervous. I *think* it's just because it's my spouse's machine.
Ironic thing is upgrades are so much safer these days.
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Age makes you more cautious. I used to carry Debian CD's with me & do all my upgrades while in flight without electricity or Internet — just to test myself I could hack my way out of a screwed up GRUB or problematic #Linux build.
I'm taking my spouse's laptop all the way from #Debian buster to trixie this morning (going through bullseye to bookworm first), & I'm actually nervous. I *think* it's just because it's my spouse's machine.
Ironic thing is upgrades are so much safer these days.
@bkuhn Glad to see that you have updated your #Debian system. Btw, I see you first upgraded to Bookworm from Bullseye. Bullseye (2021) already reached EOL more than a year ago. Although it is still supported by Extended-LTS team as "oldoldstable".
Are you dealing with large project team and hence couldn't update in past two years. As Debian says it is fine to continue oldoldstable in such cases.
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@bkuhn Glad to see that you have updated your #Debian system. Btw, I see you first upgraded to Bookworm from Bullseye. Bullseye (2021) already reached EOL more than a year ago. Although it is still supported by Extended-LTS team as "oldoldstable".
Are you dealing with large project team and hence couldn't update in past two years. As Debian says it is fine to continue oldoldstable in such cases.
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@bkuhn @nik @Pandya afaik no, Debian upgrade processes are robust, but only if you don't skip upgrades: things that are used to migrate stuff forwards aren't always available in more recent versions of the packages.
and to be sure, I'd also take care to reboot between each step, just to be sure that the most recent version of systemd or similar stuff is compatible with the kernel that is running when it gets installed.
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@petersuber aww, that's really too bad.
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@eccosilvia l'importanza della prevenzione e della sicurezza, altro che fattore "C" .
Una ragione per vedere positivamente la sparizione totale della fiamma viva dalle case.... comunque Silva ha un "C" di generosissime dimensioni 🤭 ...
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VFETs are (Almost) Solid State Tubes
We always enjoy videos from [w2aew]. His recent entry looks at vertical or VFETs, which are, as he puts it, a JFET that thinks it is a triode. He clearly explains how the transistor works as a conductor unless you bias the gate to form a depletion zone.
The transistors have a short channel, which means they conduct quite well. The low gate resistance and capacitance mean the devices can also switch very quickly. These devices were once in vogue for audio applications. However, they’d fallen out of favor until recently. The reason is that they work quite well in switching power supplies.
How good is the on resistance? So good that his meter reported the probes were shorted instead of measuring the resistance. Pretty good. We’ve seen these VFET transistors used as switches to drive magnetic field coils many years ago and they replaced much more complex circuitry.
The curve tracer in the video is a beautiful instrument of its own. The digital displays give it a high tech yet retro look. A curve tracer, if you haven’t used one, plots stepped voltages against current flowing, and is very useful for examining semiconductor devices. While not as fancy, it is possible to make one to connect to a scope quite easily.
We are pretty sure that it is a Tektronix 576. We watched a repair of a similar unit, the 577, if you’d like to see some (probably) similar insides.
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@matz Sappi che, nel caso, torno! 🙂
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@artofstimart @mora il nome storpiato in italiano è fico in realtà, venne cambiato per evitare problemi
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@jtauber.com why not?
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@acarsdrama lol
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