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The transformer at left was for a second generation high voltage power
supply using a tapped inductor boost converter with an output target of 170V at 40mA,
sufficient to drive 8 large tubes really hard. I
went with an LP ferrite core set in a forward converter mode instead of the torroid for easier
winding. The final design became the TES1329 in a 0.95" square
footprint by 0.45" high that delivered 16W (95mA @ 170V). Way too
much power for your average nixie clock which lead to the design and
production of the TES1363 and TES1364 4 watt units.
HVPS Comparison |
