Quote:
Originally Posted by kalee20
I can vouch for that - the interference is the hardest nut to crack! I made a converter this year providing HT, LT, and GB- operating from a 12V SLA battery. Overall efficiency is around 80% (it's based on a flyback converter running at 25kHz), but I needed 3-stage LC filtering on the HT output, the LT output, and the 12V input (and 3-stage RC filtering on the GB output) to keep it quiet.
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I wonder if you would like to post some details of the filtering circuits; schematics or pictures? The Aliexpress modules I mentioned earlier will need that sort of additional circuitry and I'm not very sure how best to do it.
Thanks
B