Joule Ringer!

[NickZ]

 I added another layer of 28 gauge wire on top of the first layer of the secondary windings,  of the small 3 inch ferrite rod core coil. It's the same coil as is pictured a couple of posts back. I replaced the small transistor with the MJE 3055, again, to have another go at it, as I have three of those and they all tested fine.
   At first nothing, zilch,  so I kept tinkering as this circuit does need to be kick started.  When I got it going it lit the 65 watt CFL bulb, still dimly. On 12volts the transistor gets real hot in just seconds...  So, I added a diode or two off of the base rail, now the circuits flashes very brightly, the heat on the transistor is gone, at least for now.
BUT,  It gave me such a shock that I almost threw the diode across the room from the zap it gave me. So, there's hope.  I'm still working on it...

   

[gadgetmall]

Thanks Nickz  . there needs to be a higher resistance in there i will try some microwave diodes on that base .

here is what i have so far . amp guzzler thought still and i can smell the transistor cooking ,
.

http://youtu.be/qm8O1hMXpRs

Last pic is one of lasersabers golden rods . two cost me dearly nearly 60 bucks . don;t waste your money buy the 10mm X200mm for a few bucks.

My radio rod is 6 inches and it made no difference at all with these new rods.

[TinselKoala]

Any heatsink is better than none! You can boil water with a 2n3055 and it will still work, but you can damage them from heat if they are just naked like that and you get into higher power levels.
Just drill some holes in a bit of aluminum or iron plate and screw the transistor down, with a little silicone grease. Just remember the collector is the case so your heatsink will be too. You can insulate it but why bother, if the single transistor is the only thing on it.

[TinselKoala]

Lighting NE-2 with 1.2 volts input, using a "slight modification" to Lasersaber's jt3: the addition of the diode allows the oscillations to start and make spikes high enough to light up the NE-2. It blows LEDs easily.

ETA: Works well with 2n3055 too, probably brighter NE-2 but uses more current too. Certainly louder "hum".

[gadgetmall]

Nice Going TK . that is sweet ..Current draw?  Hums huh? the Joule rattler :} I like that . Thank you for that circuit also .

Laser sabers won't light a cfl but it lights led bulbs ok which is good and it lights up 60watt incandescent which is cool  but no hv . However it is enough to kill you running on 14.5 volts soo . It's fun. thanks  for the heat sink thing . i some big ones around here some where but sucking my battery's dry in minutes is not something i like doing because the normally last months .

@Gadgetmall,
                      Lasersaber's Super JT 3 has 200 turns of 28 gauge magnet wire for the single wrap primary, wound directly over the ferrite rod, covered by 20 turns of 14 gauge household wire wound in the same direction.

Thanks
Yea thats what he said . In no way is the circuit even close to ou .I have all the exact parts in to day and that rod wound 200 turns of #24 leaves 2 1/2 inches uncovered so i  left 1 1/4 inches on either side and would the #14 20 times . It lights the exact same as my 6 inch rod nearly identical massive current draw ..so . I am Disappointed . I don't see any difference . i counted the windings 200 #24  / and twenty #14 and it lit up the bulb but the transistor still gets so hot you can't touch it . I also cannot light the filament up with a 1.5 volt battery as he did in the  video . Nor can i swap emitter and collector like i can with the other radio rod :  So i unwound it and this time i used # 20 wire all the way from end to end again and it ended up being 350 turns end to end using bigger wire that 24 , So if he used # 24 in the video as he said it will take quite a bit more turns than 200 to go end to end .With 200 turns of #24 wire i have over one inch on each end not covered in wire . So 350 turns #20 and 30 turns of house wire . I could go 50 turns but ran out .i used 4 1/2 feet for 30 turns . .
Results . Just a bit brighter but the transistor still sucks 3.2 amps and gets very hot . I tried a ceramic resistor on the base  and you can roast a weenie near it . Transistor still hot . Soo . I don't know what else to do to it right now .
I might try 4 layers of #20 on the inside and 100 turns of house wire on the outside of the next rod and see what that does,... If that don't work like i want it to i will wind 2000 turns on the inside and experiment with different wires on the outside . They are easy to wind and unwind .

Goal here is get the input volts and current way down like 1.2 volts //////////////// I might try a big Darlington on it before i do any more mods also . If it is any different that what i had i will post it in a vid.

Gadget