Questions tagged [electrical-engineering]
Study and applications of electricity, electronics, and electromagnetism. Use this tag when someone who has trained as an electrical engineer is likely to be able to answer your question.
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Electromechanical connection for lamp
I need help with a project and would appreciate any advice or recommendations you can provide. I'll do my best to explain my concept and the issue I'm facing. Concept: I have a pad with a heavy ...
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Machine with Multiple Motors and Fusing?
We have some old machines that I'd like to overhaul the electrical on. They are wired like in the schematic I provided. L1, L2, L3 come from a fused disconnect on the machine with a set of 30A fuses. ...
user45340
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PV solar panel is producing more than is possible according to its datasheet?
I have a client in Belgium that has 16 DM400-M10-54HBB on his roof. On Saturday the 2nd of December 2023, the PV output was 3.95 kW, according to the log of the Huawei SUN2000 4.6KTL-L1 5 kVA inverter....
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How do I electrically charge a sheet of plastic strongly enough that it firmly sticks to the wall?
electrostatic whiteboards
I have a bunch of these special dry erase sheets. Someone gave them to me as a gift about a year ago; I see they are still available for purchase on the Internet — you can ...
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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 ...
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High voltage wires
We have bought a house near high tension wires (at a distance of around 20m). Will it be noisy during the rains, and more importantly will the ionization increase the risk of cancer?
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Modern consumer unit, old wiring. What's left that could go wrong?
An elderly relative of mine had her fuse box professionally replaced with a new consumer unit that conforms to the 18th addition IET wiring regs. This work was done about 2-3 years ago. Nothing ...
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Homopolar motors - a curious realisation
So I've been chasing down devices with unique operational characteristics looking for potential in energy generation and I ran into these things: homopolar motors.
About 9/10 of these things are a ...
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Are two solars panels more efficient than only one of twice the power output?
Is there any advantage to use two 50 W solar panels in parallels instead of one 100 W panel?
As we know, the effect of partial shadow on a solar panel can make the whole panel ineffective. We want to ...
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Controls architecture for stepper drivers
I am working on a project which deals with a large number of stepper motors and other devices. A key feature I want to achieve is create a modular/ expandable system, so that new devices can be easily ...
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Inductor calculations helper script and motor idea
I have an idea for a motor involving the use of a flyback transformer to recycle EMF in a custom designed pole-to-pole repulsion-attraction DC motor. I wrote a script to help with setting design ...
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So even though the raw materials of semiconductors are cheap why is their cost so high and why don't we use conductor for the same job?
The materials used in making semiconductor are cheap and readily available then does the cost of processors so high can't we use metals like copper and iron which very good conductor for manufacturing ...
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Is there a reason many EEE undergrad programms have a Complex Analysis Course?
I know the very broad applications of complex numbers in engineering, although I don't understand the applications of complex functions of complex variables. Things such as the Residues, Cauchy ...
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Failed in upload firmware to esp32
I'm having an issue when uploading code to my ESP32. Previously, I had configured the partition scheme to 'minimal,' and I was able to upload code without any problems. However, after I fixed my ...
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Electricity generation from sand particles in airstream hitting surface [closed]
I read an experiment which demonstrated that metal filings fired at a surface using air blasts charges the particles, surface and airstream. I understand this is triboelectricity, resulting from ...
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