I'm intending on building this circuit, but re-specified for an output of about 150V @ 5mA. Enough to light two neon bulbs from a 12V supply.
Why do flyback transformers such as the Wuther's seem to be either specially made for this purpose, or hand wound in the DIY world? There are numerous web examples of people hand winding these things with spooled wire onto various formers.
This circuit comes with an LTSpice model. LTSpice treats all transformers and inductors similarly, and the model does not mention things like "magnetic saturation, eddy current, flux density". The simulation works very well (it's what LTSpice was written for) so there seems to be no modelled difference to using a standard mains step down transformer. Indeed, this item available on a well known auction site clearly shows a 12-0-12 mains transformer-
There is a 1:10 transformer in my original above example. That's very similar to a standard 230v – 24v transformer backwards. Why hand wind or look for the elusive Wurth?