On 11/15/2013 11:34 AM, Chris Stalin wrote:
Hi John, Wonderful reply. I really appreciate the link and the explanation.I now understand why Michael mentioned his method uses simple parts, In comparison to JT HVPS - I haven't a clue where I can source 4700pf 3kv ceramic capacitors hah!Is that last 3kv ceramic to smooth things out?In some respects the 4093 derived pulse and cheap parts almost beats playing with slightly harder to find parts using the AC pulse, And trying to solder to the tiny foot print of the HVPS.... Rather interesting.Is the inductor choice critical in terms of current or would a simple axial lead inductor work? Does one adjust the voltage resistor to get 200V DC output from the HVPS and then add the 100Kohm preload or what is meant by preload?Would 1N49378 diode suffice?"For doubler DNI C3 and bypass CR3" - Is that electrical engineer terms for omit C3 and CR3(Diode)? lol As for AC out routing comment, How far did he anticipate a person should or would place their connections in relation to the HVPS it self?More questions then I came in with originally, Always some thing new! Thanks again John. On Friday, November 15, 2013 11:37:01 AM UTC-7, jrehwin wrote: > You said Taylor has a tripler for his HVPS, I tried searching but have to yet to come acorss it. DO you have any links or literature so I ca skip the switching portion of the schematic and just go right to the tripler for ease of use with my dekatron. Yeah, the link I posted showing the AC output also shows how to connect up a tripler: http://ppl.ug/IEd55TCltCo/ > Nice to know the selection of rectifiers that cna be used. Yeah, jt's power supply operates at a high frequency (so it can be compact), so a tripler for it should use fast diodes. Mike's chopper circuit (as he pointed out) is lower frequency and can work with ordinary diodes. The tradeoff is that, with the lower frequency, you'd need larger capacitors to get the same ripple. Happily, dekatrons don't draw much current at all, and are fairly forgiving of ripple, so this isn't a big deal. For reference, Mike's circuit uses 1番 capacitors, and jt's circuit uses 0.1番 units. > With component prices so cheap these days, Shouldn't be much of a headache locating what you need. True enough, I appreciate being able to source parts quickly, easily, and cheaply. - John --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/72a9d4e7-5a56-4c86-93c3-69e0cb2135fc%40googlegroups.com.For more options, visit https://groups.google.com/groups/opt_out.
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