The DWSSTC: Spark pics

Here's a movie of arcs produced by 190V halfwave rectified AC using the PLL driver. I think they are about 9" or 10" long.

click picture to download movie (DivX, 652K)

Here's a movie of audio modulation with the PLL and a 50V DC supply. (current draw was about 4A.) I draw an arc to ground to prove that the sound really is coming from the discharge and I didn't just dub it on later ;)

click picture to download movie (DivX, 424K)

Here are some pics of the coil running with a toroid in place. It doubles the spark length :) and makes them much fiercer and hotter.

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