Nano Tess 3

Nano Tess III

Jimmy Mitchel a coiler in the US, Did it again, and beat the size of NanoTessII so, NanoTessIII.

Secondary 330T 0.7mm enamelled wire on a 20mm diameter former
Primary 1.5T 0.5mm Hookup wire (internal to the secondary) about 15mm diameter.
Driver Half Bridge, in DRSSTC type configuration.

Nanotess III showing just how small it is. The driver fits in the black section under the secondary coil. <10mm tall.

The driver , view from the top of the coil looking down.

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. The Yellow 0.1 is actually adding 4mm to the height of the driver.. I may even change it for a tantulam and cut down the former some more.. :-)...

NanoTess III, So happy to be alive, it's shaking its breakout..

NanoTess III-1/3, It was decreed that putting the electronics inside the secondary was allowed, so I've chopped off about 9mm of former and pushed the electronics up into the coil
this makes the size 22mm x 20mm diameter.

The Smallest SSTC is back home..(Again)