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Filter Choke
Hello there folks,
I was recently looking for info concerning the design of the chokes for my
system...someone told me to check out your posts by Richard Quick on the
www site.., well I have most of them, but the file entitled "rqmsgs.txt.Z"
seems to be the one that would have the info I am looking for... but what
file format is this?..It does not seem to be a zip,uuencode,binhex, or any
of the other formats that I can figure out...
Basically my question is this..concerning the protection of my neon sign
transformers, I have heard two diff. ideas on the design of the chokes..one
friend of mind recc. making a a pair of coils with a winding length the
same as my secondary length, but finer gauge wire, on a form similar in
proportions to my secondary, then running each side of these to ground with
a total of four caps...Another told me he just uses no.12 household wire,
with about 12 or so turns..(but no specs. on form size/proportion)
I guess I do not fully understand what these are meant to do, I was under
the impression that that they are to be roughly the oper. freq. in order to
block that freq. from going back to the power suppply and causing
damage,...if so, how accurate must they be..what kind of range is
effective?
Also..concerning additional RF from traveling back down the suply line..can
anyone reccomend any type of line filters to put before the power supply?
And one more question!!!! (i promise no more!!)...
Concerning coupling of primary and secondary...what sort of distance is a
good staring point between the primary and seconary (for a system with
15kv, 120mah, 0.03 uf, secondary 6.0"OD, roughly 260khz)...I know it will
take a little experimenting, but I would like to start in the ball park.
Thanks again,
Rob Del Bueno
[.Z files are generally UNIX compressed files. -- Chip ]