Nano Tess 2

Nano Tess II

Jimmy Mitchel a coiler in the US, built a coil, which was actually larger than Nano Tess, but his driver was much smaller, So the title "Worlds smallest SSTC" passed to him, but I couldn't let that stand. So in order to retreve the title. NANOTESS II was born.
Basically its the same as Nano tess, but built to fit inside a 20mm conduit, the secondary is essentially the same, (I shaved off 1/4" for good measure) and to keep the size down I made the primary inside the secondary. Due to the smaller primary dimentions I have increased the primary turns to 2.5

Current Circuit (Subject to change .) (without the protection diodes on the output of the drivers, I couldn't fit them in)

Spec: Total Height 2.5" (63mm), diameter 0.78" (20mm) Primary 2.5T internal, Secondary 0.78"(20mm) 300T approx. of 0.07mm enameled copper wire.

Nanotess II showing how the electronics and the primary fit into the secondary.

The two IXY drivers are bolted to a 15mm wide brass strip that acts as a heat sink.
The rest of the electronics is wired heath-robinson style to save on space. On the rear of the heatsink is the other IXY driver and a 100uF decoupling cap with a 0.1uf bypass cap. The primary coil is soldered directly onto the IXY driver, and coupled via a 0.1uF cap

The Secondary is wound from 0.07mm wire from a 75va 9v mains transformer, it is 0.78" (20mm) long.

It is wound so that when the driver is inside, the primary coil is under the first few turns of the secondary.

The complete unit is only 2.5" long.

NanoTess II First light..

The Smallest SSTC is back home.. (until it was beaten by jimmy...)

So...  NanotessIII ->->->->->->