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Millie
Tess
Millie Tess is a very small solid state teslacoil, designed to
run from a battery supply and to be as compact as possible,
Primary: 2T 1mm emameled copper wire.
Secondary: 2" tall 0.8" diameter, 400T on
overflow pipe 7/8" diameter. wound with 0.125mm Wire.
Topload:
2" wooden toy lorry wheel covered in Aluminium foil.
At present Millie Tess is running from single IRF840
mosfet electronic drive, and its giving about 1.25" arcs to air with a
battery voltage of 76v
Current
Circuit (Subject to change.)
Old
Circuit
Older
Circuit
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First light, running from
66V,
Its got
streamers, its arcing, and it lights a flourescent tube , it must be a
teslacoil!!
Running from 12V it'l
light a flourecent tube from abut 5" away.
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Loads of playing
later....
I've moved the primary coil higher up the
primary, It now sits 1/3 of the way up the coil, this improved the
coupling and added about 1/3"
to the
spark length.
After speaking to Richie Burnett
about the experements he was doing into HF coils (see his
HF-SSTC) I made
more improvements.
Mosfet drive now uo to +/-
10V, It now runs cooler and I'm getting much
better sparks. I've made the mark width
longer as I can now risk more power into the
mosfet.
I've changed the circuit
to
a self resonant one (See current circuit above) so I don't get the de-tune when
anything gets near it.
Click the picture for a
short movie of the output of Milletess at a low break rate. I have since
improved the break rate to around 15BPS with the same size of
output..
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Millie Tess complete with driver and batteries..
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File:https://www.extremeelectronics.co.uk/old/coils/millietess/millitess.php
Tesla Coils and High Voltage