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Variac blowing fuses (another newbie question)
Original poster: otmaskin5@xxxxxxx
Got a lot of great advice on this from you guys. Just wanted to let
you know how it turnied out.
I added PFC/motor run caps only - & didn't do anything to lower tank
capacitance at this point (that was Plan B). PFC seeed to take care
of it. I've run the coil a good number of times for 30-45 second
durations, even with a lot of continuous arcs to ground - and even
though I only had a 15A replacement fuse in stead of the original
20A. I had no further blown fuses.
PFC alone may not be the ideal solution. And I may ultimately be
better off lowering my .03uF tank capacitance as suggested by a
number of you (I have a 15/60 NST). But at least I'm back in the
ozone business for now.
As a side note, when my motor run caps arrived from Mouser, they
looked identical to the picture of capacitors "not suitable for PFC
use" shown on Gary Lau's website. I thought oh @#%, I got the wrong
ones. But I checked again, they are shown as motor run caps on the
Mouser shipping order. And Gary's picture shows the brand name
Phillips, while the ones I goe are DCE. But they look identical in
every other way. Anyway, I tried them & they seem to work OK.
Thanks everyone. Dennis Hopkinton, MA
Now to go to work on those bleeder resistors...