A tour around my home made induction heater. Power level is under a kilowatt. In the crucible is some potassium chloride, just to be weird. It's very watery when molten. Pictures, details and schematics available on my website: http://webpages.char ter.net/dawill/tmora nwms
At 280V supply, there was typically around 1.4A current draw = 400W output. As you can see, the coil gets pretty hot without water cooling. This thing is almost silent compared to my earlier video because there is no fan running, no pump, and the noisy transformer has been replaced.
I thought I'd ring in the new year with a quirky pyrotechnic display. What you see is soiled underwear packed with sodium chlorate. It burns bright, hot and yellow.
An early test, checking out some capacitors. The small caps are 0.1uF, 400V Cornell-Dubilier DME's: small and very cheap. 200 volts peak to peak is 71V RMS, and I think that tank resonated around 50kHz, so each one had 2.2A through it.
The puff of smoke is coming from a hole which was melted in the capacitor as it failed.
Polypropylene capacitors are definitely a better bet!
