Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [high-voltage]

Questions related to the design of circuits that supply or use a high voltage. There are a few definitions but the IEC definition of a high-voltage supply system is above 1000 Vrms AC or 1500 V DC.

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Can a high voltage line kill a person without touching it?

It's common (for me) to hear that a HV power line can kill a person without touching it "if they entered its field." I'm not convinced by this reason and I think it quite naive and that it doesn't clarify anything. Warning: Video shows people…
iMohaned
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Why does arcing occur on helicopter power-line repair

I saw this video, where a guy did power line inspection from a helicopter, which is isolated from ground. When he held out a "magic wand," a small amount of arcing came off of the power line to the helicopter. This got me confused, though, because…
skyler
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Power Line Crackle

I walk to work every morning and pass under some HV power lines. On high-humidity days, there's an audible crackle/sizzle emanating from the lines. I never hear this on the way home. I would expect this to come from condensation on the…
Jim Garrison
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Why everyone are building tesla coils instead of multipliers?

When I see someone want to get high voltage - we see tesla coil. Why everyone do that instead of building Cockcroft–Walton generator? Are there any issues with Cockcroft–Walton generator, making it less fun than tesla coil?
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On high voltage power lines, what is "residual power"?

In a television show, high voltage power company workers were helping an animal to safety which climbed up a tower carrying high voltage power lines. The commentator said that though the power was shutdown but still the 'residual power' will be…
Narayanan
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What voltage do electrical fly killers use?

I am interested in the voltage used in electrical fly killers - does anyone know (no speculation please) the voltages generally employed? To be clear, I am talking about mains powered, wall-mounted devices. I would also be interested in the general…
stefandz
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Measuring extremely high impedance, extremely high voltage sources

I'm working on a Geiger-counter, and trying to get an accurate measurement of the high-voltage Tube Bias. The issue I'm having is that the impedance of the high-voltage source is really, really high, I'd guess somewhere in the range of 100-500…
Connor Wolf
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High voltage electricity transport

I've read about it, checked a few youtube videos about the subject but I still can't understand the process. What is it that makes high voltage + AC current a better process to transport energy? I have seen formulas, but I need to understand how it…
MeTitus
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High voltage meter

I am working with high voltage arcs a lot but I have no way to measure the voltage. What is a good way to measure very high voltages (up to tens of thousands)?
skyler
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Should there be a ground clearance from 11 kV line to earth?

Should there be a minimum ground clearance line to earth at the voltage level 11 kV? I am living in India and I see the trains whose voltage level is 25 kV which is large compared to 11 kV. Strangely I observed that 25 kV is used in trains whose…
pankaj prasad
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Diodes in series, 3kV

I want to build voltage multiplier using Cockcroft–Walton scheme. I've got bunch of 3kV capacitors (2200pF though), and even bigger bunch of 1N5399 1kV diodes. So, obviously I want 3 diodes in series to match capacitors rating. I know that one…
BarsMonster
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Electrostatic painting on plastic

I'm attempting to create an electrostatic painting process for small plastic parts. The material is ABS and is about 4 inches by 6 inches by 1 inch high. I'm somewhat familiar with electrostatic painting of metal objects, but I am dismissive,…
Jordan
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How can I control high voltage signals? (1 to 15kV.)

I'm an embedded s/w guy, but I'm able to do low voltage circuits without too much trouble. So I will try to ask this question on high voltages! I've got a power supply running at 1 to 15 kV. It runs constant voltage, always on. The power supply…
ohboyohohoh
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Building a Tesla Coil

I want to have a go at building a Tesla Coil. Has anybody here tried to build one before? How much do all the parts cost? Is it possible to make a small scale one? When can I get the plans, and what equipment/tools do I need? UPDATE To make this…
BG100
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Buying a tesla coil?

I make music with an Arduino and old floppy drives and I also saw people making music with tesla coils. I've seen tesla coils for sale for about 200$ which seemed good, but there are some doubts: Will it even pass the customs (in germany) ? Is it…
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