This is a Royer oscillator which is a relatively high power self resonant circuit useful for generating high voltages from flyback or other ferrite transformers. Output is probably around 2000 VAC. The arc stretches out to about an inch at a power of up to 300 W.
“Continue reading” for more details and photos.
The Physics Dept of the Uni of Western Australia had this Tesla coil which dates back 40 years. Made in Germany according to the nameplate. Apparently runs at 1 MHz but lots of problems with the Leyden jar caps. It still not functioning despite various attempts so despite the historical interest it was felt a new one was needed of more modern design. So I put my hand up.
For more details and photos: Continue reading
Neon sign transformers are the starting point for many beginners Tesla coils. They are a handy 12 kV peak unloaded and 30 mA into a short circuit which is current limited.
For more details and photos: Continue reading
The second version 4 inch diameter Tesla coil uses much higher power components.
For more details and photos: Continue reading
This is a mini Tesla coil, made from odd parts from other projects and a neon sign transformer that runs from 240 V mains.
“Continue reading” for more details and photos. Continue reading
Apply several kV to nails in moist wood and remarkable wood burning fractals appear.
“Continue reading” for more details and photos. Continue reading
Can Crusher 3 is now boosted to 3 kJ and mounted into a microwave oven case.
“Continue reading” for more details and photos. Continue reading
This is a flame diode. A hot filament is used to rectify a high voltage in a similar manner to a vacuum tube. Except it didn’t work for me.
“Continue reading” for further details on this interesting setup.
Continue reading
Tesla coil in a briefcase. This is my latest easily portable mini coil which gives 2-3 inch sparks. These are great fun and are generally safe due to the low power.
For more details with 10 photos and a video: Continue reading
I have held regular Home Open Days where I did demonstrations for people by invitation.
“Continue reading” for highlights of the many displays. 36 photos.