For custom voltage supplies that you can do as roll-your-own projects, I have selected a ferrite UU core set that is good to 50W when gapped properly and allows for easy winding off the core (It was doing >92% eff at 30W due to the lower core losses of the ferrite). I am working on a multi-section bobbin for this core set like I used on a 30kV neon supply I did in the 80's that can keep the turn-turn voltage stress down to a manageable 30V. This core set is significantly larger than the toroid I'm using in the self contained unit (And significantly less exotic) and is intended as an external transformer attached to a thermally potted driver only section: Unlike the 1364, the 1474 brings out the switching nodes to allow for an external transformer. A half size version can be made by inverting one of the U cores and cutting off the legs (Still looking for an off the shelf "I").
Using the UU cores, VERY high isolation factors can be achieved without exotic creapage mechanicals. jt -- 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 [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/2a817dd5-c1b8-4e30-aa47-188d951130be%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
