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Results tagged with high-voltage
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user 740
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.
6
votes
Why everyone are building tesla coils instead of multipliers?
Maybe it's the added bonus that the Tesla coil makes lots of noise. The old school spark-gap ones buzz rather loudly, and it's even possible with solid state drive to make a TC emit audio signals from …
- 19.3k
8
votes
Diodes in series, 3kV
I think the idea is that the voltage divider formed by the parallel resistors dominates the 'divider' formed by the reverse biased diodes. So in other words, you want considerably more current through …
- 19.3k
4
votes
Harvest power from an electric fence
Those fence chargers usually generate a high voltage spike on the wire fence, relative to ground. The wire fence is on insulators to make sure that almost no current flows, unless something touches it …
- 19.3k
12
votes
Accepted
Why is high voltage AC more common than high voltage DC?
All it takes to make high voltage AC is low voltage AC and a transformer.
To make high voltage DC, you have to chop it into (what else) AC, run it through a transformer, and then rectify it back to …
- 19.3k
6
votes
Why do high voltage power lines hiss when it's raining?
My wild guess would be that the hanging water droplets might be causing corona discharges. Corona is usually worst around points of sharper curvature, where the electric field gradient is most intense …
- 19.3k
2
votes
Accepted
How does a high voltage condition break down a semiconductor?
There's no heat until there's current. Of course, when device features are very small, it doesn't take very much current; localized heating is proportional to localized current density. When there's e …
- 19.3k
4
votes
The path of electrons in AC circuit?
While it's common practice on schematics for small (i.e., all in the same place) circuits to show grounds that don't appear to be connected, this is just a convenient way not to clutter up the diagram …
- 19.3k