Sorry for late reply, I've destroyed my boost converter somehow and had to rebuild it from scratch. I've tried the current limiter, but without success - I don't know why, I followed the article and I think that this just won't work for such voltage drops or something. Funny thing is that I've chosen a small R1 for one try and with intention to blow things up I've connected it directly to converter, without any load. Of course, R1 blew up, but funny thing is that after burning the circuit was passing 1,2mA - and I was aiming at 1mA :D Of course this was just a resistor burning from 1,2k to around 250k, not a working limiter.
I have another idea. What do you think about using optoisolator in active range? It would require testing each batch of components, as they tend to have varying current transfer ratio, but you'd be able to control the current on low voltage side (even from DAC). I'm looking for a stable method of controlling it without any resistors going from HV to ground, as it would waste alot of power, at least with bipolar transistors - with a p-mosfet it could work with resistances in voltage divider like 4,7MOhm, but mosfets tend to change their characteristics with temperature. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/6ee30a29-8979-4f80-ad23-88531c176788%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
