MOSFET Tesla Coil #2
High Voltage Fun
Other Hobbies
MOSFET Tesla Coil #2
Wimshurst Generator #1
Wimshurst Generator #2
MOSFET Tesla Coil #1
AM Transmitter
Crystal Receiver
MOSFET Tesla coil #0
nearly Current Version
This is one of several versions of a circuit that all utilize the same main thing: a half H-bridge of IRFP460 MOSFETs. The coil has gone through several revisions, but two main devices exist right now. These are a continuous wave tesla coil running on smoothed 40VDC using a 5"x10" secondary wound with #30 wire (see the link to MOSFET Tesla Coil #1), and a coil running on half wave rectified unfiltered 120VAC using a 5 gallon paint bucket wound with #26 wire. The continuous wave coil has a resonant frequency of just about 500kHz. The larger coil is as of yet unmeasured, but the coil itself calculates to around 130kHz, and since it likes to run with a huge topload I'll wager it rings in below 100kHz. Of course, these pictures show it as it was last Spring, and I've made a lot of improvements since then. Maybe I'll get some photos up in the next year or so :-)
This is more or less the final circuit design. I'm pretty sure that the gate transformer driver section could easily drive a full bridge of MOSFETs, so that will likely be the next stage of this project. Who knows, maybe I'll follow the zeitgeist and turn the next one into a midi instrument.
10" arcs with a few amps in.. ..not very impressive.
Dual Sparks
Sample Photo 4
Sample Photo 5
Sample Photo 6
Sample Photo 7
Sample Photo 8
Sample Photo 9
An earlier version, using the same secondary that is now in place on the CW coil.
