Questions tagged [electricity]
5 questions
2
votes
1 answer
Why did the metal railings to the stairs in the big ferries used to shock me?
When I was a kid, and even in adult age, I sometimes went on these large (well, to me, at least) cruise ships which had multiple (like ten) levels to roam around in.
You either got there with the elevators or with the stairs. Whenever I picked the…
Venton Selland
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2
votes
0 answers
When working with generic electrically shielded signal cable, can I treat the unshielded strands of wire as signal reference ground?
I am working on a CNC application where one controller board will be sending signals to another board. The environment may have electromagnetic interference (EMI) from nearby motor activity, so these relatively low voltage (3-10V) signals may…
user391339
- 249
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1
vote
1 answer
Why do identical-looking power plugs randomly not fit in some sockets in the same power strip?
This has bothered me for many years, but I'm only now coming around to ask about it.
I don't know if this is unique to Sweden or something, but for whatever reason, when I try to plug things into the standard power strips (see photo), they…
G. Flurer
- 13
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1
vote
2 answers
Why am I getting such conflicting safety advice regarding opening up and dedusting/servicing my CRT TV?
I have asked questions on Stack Exchange. I have watched many videos on YouTube. I have asked professional TV repairmen. I get wildly different advice on the safety of opening my 1989 28" CRT TV.
The videos talk about keeping it unplugged (and…
L. Yerke
- 19
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0
votes
0 answers
Peculiar step-down transformer behavior
I have wired several loaded transformers and when calculating power on H vs X side by multiplying current times voltage the wattage is not even close to equal with the H side having 2 to 3 times more of it than the X side.
I'm having a hard time…
ZipStein
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