All Questions
Tagged with electrical-engineering electrical
77
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So I am building this mechanism and I need to bring the rotation down without changing speed or direction
Just like the Title said I need to move rotation down without changing speed or direction. I can’t use belts because since I will be using a motor, when it stops the belts won’t.
2
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33
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Good, reliable, low-resistance electrical connections to an aluminum vacuum chamber
Vacuum chambers for physics experiments and scientific equipment are sometimes made of aluminum, though stainless steel and mu-metal chambers are used as well.
Aluminum forms a thin native oxide layer ...
- 339
2
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2
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365
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Will a bare wire encircling a tent and connected to a tall metal rod help to protect the tent from a direct lightning strike?
I am planning to go camping later this month and I am concerned about lightning since the campsite I will be staying at is located on flat terrain in a rural area in Illinois. This campsite is located ...
- 303
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56
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How to calculate the distance between cable supports, considering the weight and other factors?
I am designing a cable infrastructure and have come across the question of calculating the optimal distance between supports for cables. What formula can be used to determine this distance, taking ...
- 1
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1
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248
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Mesh Size and Thickness for Faraday Cage?
I've been considering a double faraday cage of 1/4in 23-gauge wire and 1/8in 27-gauge wire. With this setup would the 1/4in on the outer shell and 1/8in on the inner or the 1/8in on the outer shell ...
- 131
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1
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62
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Light Switch Problem
I have a problem that I believe there is a solution to but I'm lacking in the knowledge on how to do so.
There two switches in a building. Both are single pole single throw switches and cannot be ...
- 1
0
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3
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75
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What does 12CC refer to when talking about voltage?
Is it 12V with a connector?
For example in the data sheet here: https://www.hydraulicmegastore.com/product/vcf12nc12cc/
Is this related in any way? (A DMP-12CC connector cable)
https://www.monacor.com/...
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2
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60
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Can wireless charging become more energy efficient?
I've stumbled upon a few articles saying that wireless charging takes more energy to charge something compared to the cable. Like this one.
Like in the test from the article, it takes 47.33 % more ...
1
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0
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48
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Does static electricity dissipate if object is sealed in insulator sphere?
I rub a piece of glass against some silk. Normally, left in open air, it would lose its acquired charge. What will happen if after rubbing, I immediately seal it inside a sphere made of insulator ...
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704
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Standards for the sign of the power factor; IEC and IEEE; is there an ANSI standard?
Working with some power factor measurement, this article (reference: https://www.se.com/ww/en/faqs/FA212521/) has this interesting bit:
Issue: Understanding and interpreting the sign of a power factor ...
- 181
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1
answer
60
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Why do inorganic LEDs wear out?
Why do inorganic LED bulbs have a limited lifespan? For example, a manufacturer may quote that a bulb or monitor powered by an organic light emitting diode(s) has a lifespan of 50,000 hours, while it ...
0
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2
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74
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Force required for a power generator in a coal power station
I am unsure about how to word this question properly and I assume that it might take two directions probably because of the unknown variables involved but here goes...
On the actual physical power ...
- 101
1
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0
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49
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What should be the clearance and creepage for the line to line 440 Vac and line to neutral 240 Vac of the three-phase system on PCB?
Also is there any link to calculate this as per the UL and other industrial standards
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1
vote
1
answer
210
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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 ...
1
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1
answer
63
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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 ...
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