Re: 5000/20 ignition trans question

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "John Richardson" <jprich-at-up-dot-net> 

Hi Steve,
I dug thru the garbage to find the case (I unpotted it), and it says single
shot.  Apparently not meant for long run times.

John
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, March 21, 2004 7:16 PM
Subject: Re: 5000/20 ignition trans question


 > Original poster: "Steve Cook" <steve-at-g8cyerichmond.freeserve.co.uk>
 >
 > Typically these transformers are rated for a few minutes operation max.
 > One's I have come across are rated for 2-3 minutes, it should say on the
 > makers label.
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Saturday, March 20, 2004 8:20 PM
 > Subject: 5000/20 ignition trans question
 >
 >
 >  > Original poster: "John Richardson" <jprich-at-up-dot-net>
 >  >
 >  > Hello,
 >  >
 >  > Having always been a scrounger, I dismantled an old oil burning space
 >  > heater (salamander) a few years ago, and took out a cute little 5000
volt,
 >  > 20 ma trans.  I am waiting for some items for my big coil ( to find out
 >  > more about the 942's blowing), and built a small table top coil to keep
me
 >  > occupied.  The performance with the trans was rather dismal, maybe five
 >  > inches or so, so I got the bright idea to modify the core for more
 >  > output.  Unlike an NST, this has no shunts, just a welded together
 > laminate
 >  > core.  The coils are on one outside leg, and the outer core is
rectangular
 >  > in shape.  However, coming off of the core the opposite side of the
coils
 >  > is a laminate projection, much like the center leg of a capital "E",
that
 >  > comes in between the primary and secondary, and just touches that side
of
 >  > the core.  I figured that by drilling away half of this "E" area, it
would
 >  > be similar to removing half the shunts in an NST.  It certainly did
work,
 >  > as output improved several inches.  I'm just wondering, as the trans is
 > now
 >  > HOT after 30 seconds, if these ignition transformers are meant for
 >  > continuous running, or only for a "single shot"  to light the space
 >  > heater.  I am going to pick up a new 5020SE France for permanent use,
as
 >  > this little guy isn't going to live long.  I was just wondering if
anyone
 >  > has ever "drilled" the core of a similar trans, and what the results
might
 >  > have been.
 >  > Thanks,
 >  > John Richardson
 >  >
 >  >
 >
 >