Re: Ignition coils

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

Original poster: "Steve Zeitler" <zeitler-at-verizon-dot-net> 


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, March 28, 2004 11:27 PM
Subject: Re: Ignition coils


 > Original poster: "john cooper" <tesla-at-tesla-coil-dot-com>
 >
 > For what it's worth, I built my first tc using an ignition coil but not
 > just any ignition coil, a high performance coil like one you'd put in a
 > race car, it was supposed to have a higher voltage output than a 'normal'
 > coil.  Could be something to think about.
 > jfc
 >
 >
 > ---------- Original Message ----------------------------------
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date:  Sun, 28 Mar 2004 19:18:08 -0700
 >
 >  >Original poster: Bob81818-at-aol-dot-com
 >  >
 >  >Hello list,
 >  >        This topic has probably came up before, but I was wondering if
 >  >anyone has any suggestions, comments, or thoughts about running a small
TC
 >  >on multiple ignition coils. I came across three identical coils from a
GM
 >  >truck. They are made by Delco-Remy and the model number is 1875894, if
 >  >anyone is familiar with those. Basically I am interested how to wire
them
 >  >up, if possible in a bipolar TC. Are they like small MOTs? Thank you for
 >  >your time.
 >  >        Dan E.
 >  >
 >  >
 >  >
Just a quick tidbit on this
Ignition coil drivers and flyback drivers I've seen often use a 2N3055.
These don't work well... they're too slow and have a low breakdown V of 60v.
They don't live long.
I have had good luck using the "BUY69A" horizontal deflection transistor.
They're good for 10A and 1kv.
They are at mcmelectronics-dot-com for $4.10 ea. Power mosfets seem to be the
newer thing for this but I haven't tried them .
                                                        Steve Z
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