USB extension cables

Apr 27, 2026 Last reply: 2 months ago 44 Replies
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Yes, there will be a little bit of current flowing as soon as the power source is connected, because of capacitance.

Will this be on the exam ?

Imagine what a hard time Professor Ohm had, studying for his mid-term.

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"While his work greatly influenced the theory and applications of current electricity, it was so coldly received that Ohm resigned his post at Cologne. He accepted a position at the Polytechnic School of Nürnberg in 1833. Finally his work began to be recognized; in 1841 he was awarded the Copley Medal of the Royal Society of London and was made a foreign member a year later."

The same thing happened to Fred Capacitor.

Paul

If there had been any sort of Capacitance, the current from any voltage held by said Capacitance would have flow immediately after the power source was connected, surely.

Hmm!! Was that "current electricity" as in "I = V/R" or as in "At that Time"??

Daniel70

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The classical Intel document on the topic, try the nineth page of the PDF, Figure 6, for a picture of what happens when a 10uF USB peripheral is plugged in. This document was produced back in the USB2 era, to help engineers make USB interfaces where the VBUS disturbance of one "tenant" would not upset an adjacent "tenant".

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Paul

[snip]

If I was a teacher, that is one question I would NOT want to hear from a student.

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One time I was watching some video files, and a cat jumped up and deleted some. I think it was this one:

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[snip]

Tomorrow is the day for that, anyway.

In alt.comp.os.windows-10 Paul snipped-for-privacy@needed.invalid wrote: |--------------------------------------------------------| |"Among the students, this was one of our little | |joke-memes. Playing the part of the naive student | |constantly angling for the shortest path to a | |parchment. | | | |"If I take basket weaving, does that count as a credit?"| | | |That person. | | | | Paul" | |--------------------------------------------------------|

I chose modules to better appreciate knowledge for my career instead of to get easy marks. I have a degree in computer science. I know persons who deliberately chose as few modules as possible which actually require programming in their degrees' final years, because stuff like UML stopped them practising actually programming.

The year that I chose to do Compiler Construction is the 1st year that that school stopped making Compiler Construction compulsory. So lecturers at the beginning of that year advertised optional subjects by giving us presentations. A search-engine lecturer succeeded to encourage most of us (not me) to not choose Compiler Construction and to choose a search-engine module by warning us that Compiler Construction is mathematically exact so it is difficult (but you can get 100%), whereas that search-engine module is easy to get a high (e.g. 70%, but not 100%) mark in because it involves waffling in an essay. After he said so, he asked us who of us was certainly going to choose Compiler Construction. None of us said that we certainly would.

Search engines are worse after that year.

This newsserver does not allow a crosspost to as many newsgroups as the article to which this is a response is in.

(S.

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fuer Kontaktdaten!)

Hmm. I'm a leftie and manage with a standard mouse (my left index finger is a bit twisted out of its usual position but nothing I can't handle).

What >IS< causing me grief is that I have twin 27" monitors and while I run Agent on monitor 1 I find the program messages coming up on monitor 2 and can find no rational reason that it should be that way - so if the cursor suddenly disappears I am now instantly taking a glance to the other monitor to see if it's there...

Sorry. I didn't touch the settings.

I don't kave a cat, but I'd be glad to blame someone else's.

Good point. I'm sorry, Force. It must have been the cat.

Good one. I guess science was already tough in those days.

Of course, the real person to look at there is Farad(ay). And to make up the triumvirate, I think there _was_ someone called Henry, but I know nothing of him.

You commented: "Agent has program messages? I use Agent v5, and I'm sure I've seen them but don't remember now." and I replied.

I'm not suggesting that you raise Eudora from the dead. Instead, I suggested: "Perhaps if you used the current versions, you might have fewer bugs to deal with? (I use Forte Agent)."

I don't know. I are not a programmist.

Joseph Henry. He has his own Wikipedia entry.

Jeroen Belleman

Aha. I think I need the latest updates for my brain. I wonder if Microsoft can help me.

Aha!

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The surname of my next door neighbor is Henry. Not very common. I should ask him if he's ralated.

I'm betting NO!! But Linus might be able to help. ;-P

(Runs away, ducks and hides!!)

[]

They will seem to initially, but will then tell you your existing one needs replacing first.

I thought he preferred penguins?

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