The electric-machine tag has no wiki summary.
1
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1answer
454 views
Dry, wet and free voltage contact?
I would like to ask about three kinds of electrical contacts: dry, wet and free voltage. ...
1
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4answers
179 views
Can I use a 220v engine to build up a RC car?
sorry for the noob question, but I'd like to build myself a small RC car. I've found this motor in a blender, which runs at 220v.
Can I power it with a lower voltage? What should I use?
Thanks a ...
6
votes
8answers
345 views
Isn't current flow a wrong term?
In most text books and other electronics material it's said current is flowing through the circuit. Isn't this wrong? As current is flow of charge. Is there anything such as flow of flow of charge?
-3
votes
1answer
56 views
Electric motor cutting out at full power [closed]
I gutted a battery for my electric power tools. I attached the battery to an ac dc adapter. When I pull the trigger of the drill it works fine until I get to the max speed (pull the trigger all the ...
4
votes
3answers
332 views
Electricity consumption of electrical machines - why do they consume electricity when they are not turned on?
The question is, why do electrical machines consume power when they are not turned on (they are plugged into an outlet)?
Also, suppose there is a seven-port USB hub with AC power. Is the power ...
1
vote
1answer
294 views
Will a gas generator survive an EMP?
Not really sure where to ask this question. I was watching an episode of a TV show involving a gas generator and it got me wondering whether electricity could still be generated by a gas generator ...
2
votes
1answer
145 views
Programmable power supply
I have assigned to design a kind of programmable power supply. Can't decide on a way to make it. Need help with this..
This is a high level block diagram of the required system
...
4
votes
2answers
499 views
How do I modify a DC electric generator to get the same power at a lower speed?
This will be a theoretical question.
Suppose that I have a DC generator, and I'm getting 300VA power from it when it rotates at 2000rpm.
I want to make it run at a lower speed of about 700rpm, and I ...
3
votes
2answers
240 views
How to detect surges in the main AC
Electronics have a habit of breaking in my house. In the last 2 years or so, I had 3 desktops, 1 monitor, 4 cellphones going dead. They are not completely dead like they won't turn on. But in the case ...
2
votes
2answers
127 views
How does a large electric switch different from small?
Why do some electric appliances require to have a large electric switch to turn them on or off? If I use a small switch where a large switch is required, would there be potential possibility of ...
0
votes
2answers
278 views
Rotating Platform That Starts and Stops Incrementally
I'm not sure this is the right place to pose this question, as it probably encompasses more than one field - EE, ME, programming, etc. But I'll ask the question anyway and hope that someone might ...
3
votes
2answers
193 views
Which parts of this rotor can be made out of plastic?
I'm asked to redesign a rotor, by making as much parts of it as possible out of plastic. The issue is its weight, we want to make it as light as possible. Especially the shaft & axis of it is the ...
2
votes
1answer
232 views
What are power cube transformers?
If I'm not wrong, is the term "Power cube transformers" is less commonly used to refer "A.C/D.C Adapter"? I couldn't find the use to this term.
0
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3answers
299 views
How does electrical devices consume power?
I'm curious to know how does an electrical device can consume any amount of power it is required? Suppose the voltage here is 220V. How can you get any amount of electrical power say. 1000 watts out ...
4
votes
2answers
270 views
Will a 3 phase induction generator fight its own rotation?
So in a 3 phase induction generator with coils for the stator and magnets for on the rotor, I am wondering if the the current induced in the coils would create a magnetic field that would oppose the ...
