Worlds smallest thomson's disk launcher.
ShawnLG, Fri May 05 2006, 03:47AM
I'ts so small you can build it on your bread board! Nineteen .01uf capacitors are charged to around 690v. Then the three gas discharge tubes will trigger and dump the energy into a small spiral coil form etched on a PCB. The PCB coil form was pulled from a CD rom head lens. I do not know how many turns are there but it looks like maybe 20 to 30. The coil meashures about 5 ohms. The rest of the picture is mostly self explanitory. No expensive pulse capacitors needed.
PERFORMANCE:
When triggered, the piece of foil on top of the coil will jump a few mm. Not impressive, but demistrates Faraday's Law.
Re: Worlds smallest thomson's disk launcher.
Simon, Fri May 05 2006, 06:44AM
Not exactly a "launcher" but, wow, is that really 45mJ (millijoules)?
What kind of charger do you use? Looks like a mini tranny run off a single-transistor oscillator or something.
Re: Worlds smallest thomson's disk launcher.
FastMHz, Fri May 05 2006, 05:10PM
That's pretty cool...and proves that they work even when scaled wayyyyy down.
Re:
Worlds smallest thomson's disk launcher.
ShawnLG, Sat May 06 2006, 03:33PM
The charger is like the one you would find in a disposable camera. This one is from a laser printer.
Coilform:
Re: Worlds smallest thomson's disk launcher.
Electroholic, Sat May 06 2006, 05:13PM
Where did you get that work coil?
Looks like a planar transformer.