Re: new flyback transformer HV question

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

Original poster: "Jonathan Peakall by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jpeakall-at-madlabs.info>

Ryan,

If the sparks in the lightbulb are getting yellowish, I think it is because
air is begining to get into the bulb. Drawing arcs through the glass must
punch holes. Try a new bulb and see. I have had this happen, and replacing
the bulbs works.

Try a tool dip type of insulation for yor flyback. Since you can't take it
apart, dip it whole. I find it works pretty well.

Jonathan

www.madlabs.info

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, August 14, 2003 5:57 AM
Subject: new flyback transformer HV question


 > Original poster: "Ryan Molecke by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <ryan-at-molecke-dot-com>
 >
 > Hi All,
 >
 >
 >     Thanks greatly to those who have commented on this thread already!
 >
 >     So now I have a new, $1.50 flyback transformer with no internal
diodes. I
 > wound 4 turns of 20 gauge (or so) wire for the primary. I have 2 turns for
 > my flyback. Sparks started flying!
 >
 >     I found that if the ratio between flyback/primary turns has to be low
 > enough so that you don't punch too much V through the transistor and then
 > the sparks stop (at least this is my theory of why the sparks stop
 > sometimes). I'm getting sparks at about 1cm which I can drag to about 3cm.
 > When I hook up to a clear 40W bulb I get plasma in the bulb!!
 >
 >     I am about to try the 2 transistor version of this circuit. I'm sure
it
 > will pump up the voltage as I am told it will by fellow coilers. Before I
 > try this I have some questions/comments I would like to bounce off
 > knowledgeable people.
 >
 >     I was unable to take the transformer apart. I wound the wire through
the
 > ferrite core with some black electrical tape around it. I'm now seeing
 > corona from both primary and flyback, apparently into the ferrite core. My
 > poor man's plasma bulb also shows the tendency to have an orange flame
that
 > arcs right to the glass. hmmmmmmm.
 >
 >     I'm going to have to build my own flyback completely from scratch, it
 > seems. Does anyone know what the orange flame instead of bluish plasma
 > means?
 >
 > Thanks!
 > Ryan Molecke
 >
 >
 >