Re: hvguy-dot-com new flyback driver

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

Original poster: "Area31 Research Facility by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rwstephens-at-hurontario-dot-net>

Matt and others,
 
I have a few large doughnut N.O.S. 60's color TV flybacks (FLY-445) for direct
25 kVDC without a tripler in a vacuum tube set as you describe encased in
silicone, not the crappy earlier wax jobs, for sale for $30 US each which
includes P&H to Canada or Continental US.  Contact me off list if interested. 
<mailto:rwstephens-at-hurontario-dot-net>rwstephens-at-hurontario-dot-net
 
Rob
>
> ----- Original Message ----- 
> From: <mailto:tesla-at-pupman-dot-com>Tesla list 
> To: <mailto:tesla-at-pupman-dot-com>tesla-at-pupman-dot-com 
> Sent: Thursday, May 02, 2002 22:17 
> Subject: Re: hvguy-dot-com new flyback driver
>
> Original poster: "by way of Terry Fritz
> <<mailto:twftesla-at-qwest-dot-net>twftesla-at-qwest-dot-net>"
> <<mailto:Fucian-at-aol-dot-com>Fucian-at-aol-dot-com>
>
> In a message dated 5/1/02 8:25:19 PM Eastern Daylight Time,
> <mailto:tesla-at-pupman-dot-com>tesla-at-pupman-dot-com 
> writes:
>
> << When I was a kid, I perfected a flyback circuit that worked with a single 
>  2N3055.  The key was putting an inductor (couple of mH?) directly from base 
>  to emitter to suck the charge out of the base during turn off.  I used 20 
>  turns of secondary on the bottom rung of the flyback, and 2 turns of 
>  tickler coil connected via a cap to the base.  This was an oscillator.  You 
>  start the oscillation by hitting a button which spikes the base line, then 
>  its free running.  I used to be able to flash over and incinerate the 
>  biggest flybacks from the 70's, with about 30V Vcc.  This circuit was very 
>  efficient since the L-C high pass character of the tickler circuit pulsed 
>  the transistor with a very short width.  Rob. 
>   
>  ps.  I'd love to build one of these again, but those old flybacks are 
>  no-where to be found except in landfills 
>   >> 
> Hmmm, sounds interesting.So an inductor would help out?What about using an 
> inductor with a mosfet?
>
> Isnt it sad that those NICE flybacks are all under dirt?I REALLY wish I had 
> more. I have an ok one but it has many secondary outputs although its a good 
> 3in diam by 1in disk.Maybe we ought to "mine" these landfills?LOL im 
> kidding!Any ideas where to get these?Surely they are stockpiled somewhere.
>
> Matt
>
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>
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>