Re: solid state magnifier...accidentally...cool!

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Pyrotrons-at-aol-dot-com>

Hello again, and again ; )

(all snips from Mike Novak)
> So I got mine running from 1kHz-347kHz...

Very cool. I didn't realize they went up so high, I thought they dropped off 
at 100kHz or so. But it's not the first time I've been wrong ; )

> I used my circuit to melt solder, and the arc itself was hot enough to 
> start my workbench (at school :-) on fire from 1/2" away (luckily the 
> bench has enough soldering iron burns to camoflauge the mark it left).

Hey, what else are flyback drivers for?!

> I'm planning on making a small maggie based on the flyback later this 
> week ( using a 2N3055 -TO3 style- with some inventive cooling for 
> operation at higher power) 

I used one of those "single transistor" flyback drivers once, with a 3055. I 
also used a 10" by 10" huge heatsink for it!!!....and it still got warm.

> I'm planning on making a small maggie based on the flyback later this 
> week ( using a 2N3055 -TO3 style- with some inventive cooling for 
> operation at higher power) 

A flyback driven maggie....hm. Keeping in mind that the typical 3055 driven 
flyback operates anywhere from 5 - 30kHz, how in the world will you make a 
secondary (extra) coil to resonate that low? Small wire, big coil, big 
topload? Or do you plan to use a 555 driving a 3055...so you can get high 
freq out of it? I'm sure that would work well.......check a 3055 data sheet 
to see it's frequency range though. 

What I have done before.....this is cool now.......is use the output of a 
flyback THROUGH A SPARK GAP and tank capacitor.........into a tesla coil 
primary.....to drive a secondary coil in the old-fashioned way!! It was 
really cool. 2" tiny, tiny, arcs, but extremely high frequency (drove a 6" 
lighbulb wonderfully) and was really neat. Tank BPS was 20kHz! Very safe 
compared to that of a "conventional" tesla coil operated at 60Hz from the 
wall.

Take care, have a good one.

Justin Hays
KC5PNP
G-3 #1150
Email: pyrotrons-at-aol-dot-com
Website: www.hvguy-dot-com