Comments

This profile is from a federated server and may be incomplete. Browse more on the original instance.

Eufalconimorph, to piracy in RANT: I hate the fact that my ISP can restrict access to certain sites

You mean SNI, not ESNI. ESNI is the Encrypted Server Name Indication that gets around that, though the newer ECH (Encrypted Client Hello) is better in many ways. Not all sites support either though.

Eufalconimorph, to memes in Calculus? Nah, bro, that's easy stuff

You use the cleaning function first, then the dry function. Don’t just dry the shit on there (well, maybe you would, but everyone else washes first, that’s the point of a bidet).

Eufalconimorph, to asklemmy in Do you pay for Discord Nitro?

Same. I’d rather pay than have advertising.

Eufalconimorph, to science_memes in 🌿👀🌿

Not if they have to see that guy with his pants off!

Eufalconimorph, to memes in This post

Negative absolute temperature is a thing. Lasers exhibit negative temperatures when active, i.e. the lasing medium has a negative temperature expressed in Kelvin. Adding more energy doesn’t increase its entropy, it just turns into more laser light. Any such system with bounded entropy can have a negative thermodynamic temperature.

Eufalconimorph, to askelectronics in How to use Liquidwire (conductive paint)

Copper or silver-based should be lower resistance. These conductive paints tend not to be very conductive, the carbon stuff is essentially making a thin-film carbon composition resistor. Good for repairing rear window defroster heating elements, not so great as a 0-ohm trace in a keyboard. For short (<1cm) wires it’s usually not too bad, but with the amount of damage I’m not sure you’ll be able to repair the thing.

It looks like it might be from a Model M-style keyboard. Unicomp sells those.

Eufalconimorph, to electronics in Community seems dead. Can we mirror reddit posts here?

If there’s more activity on Reddit then here, then Reddit repost bots make it feel like all the community action is happening on Reddit. They push people back to Reddit because that’s where all the new posts are coming from, so why engage here if the active discussion is already in progress over there?

Eufalconimorph, to askelectronics in Need to view one of my posts on the subreddit

The Internet corollary to Murphy's Law: If you post something, it's public forever unless you need it later, then it'll have link-rotted. Anything you want to delete will be archived, anything you want to save will be deleted.

Eufalconimorph, to asklemmy in What is your favourite floor cleaner liquid and why?

Murphy’s Oil Soap for wood floors.

Eufalconimorph, to electronics in Community seems dead. Can we mirror reddit posts here?

Interesting. I’ve mostly seen communities overwhelmed with bot posts and 0 replies, but I haven’t taken any statistics.

Eufalconimorph, to asklemmy in What do you use Vaseline for?

It’s dielectric (non-conductive) not dialectic (talking).

Eufalconimorph, to asklemmy in What was the last dumb phone you had before your first smartphone?

Motorola Razr IIRC. First smartphone was a Samsung Galaxy S.

Eufalconimorph, to electronics in Bought my first "bench" power supply 😁

The “isn’t huge” is the issue. Linear supplies need a rather big transformer to work with 60Hz mains instead of chopping it up at 20kHz or more like switchers do. I’ve got a Siglent SPD 3033X-E (decent, reasonably cheap) and a BK Precision 9201 (better, more expensive).

Eufalconimorph, to electronics in Bought my first "bench" power supply 😁

The small supplies are nice for size, but tend to have more noise than the big linear supplies. If you’re working with low-precision DC circuits, or even stuff up to audio frequencies (basically still DC) it’s not likely to be an issue. If you’re working with RF circuits it’s more likely to be an issue, though of course if they’re not too close to the switching frequency it’s easy enough to filter the output.

Eufalconimorph, to askelectronics in At what size of transistor does semiconductor manufacturing become practical for independent manufacture?

Also bleeding-edge processes mean smaller, thinner gates. That’s what gives them the fast switching speeds, but it reduces the max allowable voltage. For parts that need to handle more than 1.8V or so a modern 5nm process will just end up using bigger gates than the process is optimized for. May as well go with an older process (bigger minimum gate size) that’s better suited to switching the voltage needed. For Bosch (automotive parts, power tools, etc) they’re making a lot of parts with really big output transistors (switching 14V, 48V, etc) and not super high-performance processors.

The big disadvantage with particularly old processes is that they used smaller wafers. So fewer chips per wafer processed, meaning lower overall yields and higher price/chip. The switch from 200mm wafers to 300mm in 1999 meant the wafer area increased by a factor of 2.25! 300mm wafers also required fully-automated factories due to the weight of a wafer carrier (a front opening wafer pod, or FOUP, is 7-9kg when loaded with 25 wafers), which save on labor costs. So processes older than 1999 (around the 180nm node) are sometimes not worth it even for power electronics.

  • All
  • Subscribed
  • Moderated
  • Favorites
  • localhost
  • All magazines
  • Loading…
    Loading the web debug toolbar…
    Attempt #