Burning plasma screen with breathtaking beauty

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At some point you've got to resign yourself to the fact that the TV you've been trying to resurrect is just not salvageable. But if you're knowlegable about working safely with high voltage, you might get quite a show out of it yet. Here [Aussie50] finds beauty in destruction when he fries a large plasma panel from a broken HDTV. The flyback transformer from a microwave oven drives the display. … [Read more...]

Cockroft-Walton Multiplier can output positive or negative voltage

300kV_Power_Supply

If you've already dipped your toes into high-voltage power supply pool you may be thirsty for a bit more knowledge. Here's a neat illustration of how to build a voltage multiplier that can output a positive or negative supply. It is based on a design known as the Cockroft-Walton Multiplier. It's the add-on housed in the plastic box seen in the image above. It uses diodes and capacitors in an … [Read more...]

See through everything with a home made x-ray

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[Grenadier] built his very own x-ray machine. He's no stranger to high voltage - we've seen his Jacob's Ladders and Marx generators. Surely he can handle himself with high voltage and dangerous equipment. With this portable x-ray machine, [Grenadier] has begun overloading Geiger counters. We're just happy he knows what he's doing. The key component of [Grenadier]'s portable x-ray machine is … [Read more...]

Nine not-so-easy steps to build a singing Tesla coil

musical-tesla-coil-build

We love a good Tesla coil music performance, but have never really considered building our own. After reading [TheHomebrewGuru's] guide to musical Tesla coils we're still not considering it. Whether or not you're going to undertake the project, his massive writeup is worth a look. The tutorial begins at the beginning, with a bit of background on these devices, including what they are, where … [Read more...]

A head-mounted Tesla coil – what could possibly go wrong?

tesla-coil-hat

We can hear the commercial now... “Reeeeeeal men of geniuuuuuuus! Here’s to you Mr. no-fear, singing Tesla coil on your hat wearing guy...” Call him a genius or call him crazy - all we know is that [Tyler’s] Tesla coil hat is awesome! Even though it’s the middle of November, we couldn’t pass up this Halloween costume. [Tyler’s] creation essentially boiled down to taking a … [Read more...]

20 kilovolts replaces push pins on this bulletin board

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Electrical Engineers don't need push pins. That's because they know how to control electrons! [Sven] put his knowledge of these subatomic particles to use when building his high voltage bulletin board. It uses a set of vertically strung wires to keep paper pinned against the board. The wires have high voltage at low current travelling through them. They're in front of the board, but not touching … [Read more...]

Halloween Hacks: A Jacob’s Lantern sure to win the carving contest

jacobs-ladder-pumpkin

[Matt] entered himself in a pumpkin carving contest this year, even despite the fact that his artistic skills were a bit...lacking. He knew that he had very little chance of winning the contest unless he had a great gimmick to make his creation stand out, so he started brainstorming. [Matt] figured that since his design would have to be somewhat simple, he needed something eye catching that he … [Read more...]