Electronics > Projects, Designs, and Technical Stuff
Low quiescent/ standby boost regulator 3.3-500V
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Marco:
An autotransformer has nearly the same complexity as a flyback, the couple of windings saved are hardly relevant, especially given they can be wound with thinner wire.

Isolation has complexity, but you can use the fly back transformer without it.
Amper:
It could be a nice idea though considering thee isstandard boostconverter ICs up to around 60v so a 1:1 tapped inductor could get rid of the previously needed external fet, that is a legit point he has there.
Marco:
Boost converters with lots of annoying features which will just make your life hard, compared to a nice and predictable hex inverter ... I'd go for the hex inverter with two transistor from the Theremino GA500 design.
Amper:
The 7414 does not mean i cant use a transformer, a normal boost topology or what ever afterwards.
EmmanuelFaure:

--- Quote from: Amper on July 15, 2019, 10:41:01 am ---It could be a nice idea though considering thee isstandard boostconverter ICs up to around 60v so a 1:1 tapped inductor could get rid of the previously needed external fet, that is a legit point he has there.

--- End quote ---

And why not a tapped inductor with ratio 1:10, or even more? Buy a ferrite core and do it yourself. Sometimes a bit of handwork is better than browsing catalogs for hours searching the perfect off-the-shelf component.
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