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Registered Member #1408
Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679
Well, you've seen the difference a bit of current can make. There you have it: you will eventually have to settle on what you're going to feed it with. Frankly, I have not tried a rectified flyback for a SGTC (a "push-pull" solid state TC may be a different story). I have tried some unique transformers but all that I did try, I used an AC system. There are many folks here who can tell you WHY certain transformers and system designs are more appropriate for a SGTC than myself.
However, you can make your own HV probe with a selection of 10M ohm resistors & a cheap DIMM. That might be the answer to a lot of your questions as you make changes. I was very lucky to find a old RCA HV probe in a surplus sale & have used it often. A system that puts out 30K @ 1ma may not be as useful for your purposes as on that which has much more current. Think about all those "Stun-Guns" that supposedly put out 250KV.....Their likely current may be 2ma. Remember you have to create some sort of a spark gap. If the existing spark is pencil thin to begin with I really don't see it being appropriate for a SGTC.
Leaving theory alone for a moment, the "commonly used" current for the majority of coils range from about 20ma on up. My belief is that even if the coil design is a micro one, you would need at least 10-15ma. If the power supply is extremely small you may have less room to tune the coil & your design may need to be even more exacting.
Registered Member #2871
Joined: Sat May 22 2010, 06:50PM
Location:
Posts: 81
Ok i have some questions about tesla coil!First of all i think to supply the coil from a flyback transformer with a 'one switched power transistor driver'!Also i think to use this plastic pipe:
It is 4,8cm diameter..It will be ok?Which is the best diametere for a small or medium coil?Second i am not sure for how many turns and what size magnet coil to use...I have four sizes:1)0,75mm 2)0,55mm 3)0,35mm 4)0,21mm diametere...
Registered Member #2871
Joined: Sat May 22 2010, 06:50PM
Location:
Posts: 81
I am almost ready to turn on my sgtc!The primary is 20 turns of 1.3mm Cu wire with 6mm distance between each turn,the secondary is a 5cm,14cm height winding with 0,2mm enameled wire,the spark gap is a simple two electrodes of around 0,3mm distance with a fan to cool it.For capacitor bank i use two homemade saltwater beer bottle capacitors!At last my power supply is a flyback driven with a zvs driver at 12v 12A which makes a purple/little white spark at around 1cm and i can draw it to almost 4-5cm!What is your opinion?It will work?What i must first check for tuning?
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first tesla coil/questions
