Spark transmitter

V

VK3ZYZ

Guest
I have an interest in a "Spark Transmitter", or Tesla coil.
Here is the start of the project.
TeslaCoil_01.jpg


This coil is 710mm long on an 800m x 100mm fiber glass tube.
The measured inductance is around 3.63mH, and with the stainless steel dish on top, has a resonance close to 2Mhz.
If my calculations are correct, 4 turns at 110mm diam, spaced over 30mm, with the 300pF cap I have, should make a primary.
There are 2 coils and SS dishes, so this will, I hope, end up as a stereo Tesla coil speaker system.
Watch this space for updates, but that may take a while.
It may be a good idea to test this away from the town ;)
 
B

BillC

Guest
I have an old EMF pilot arc welder [ pie warmer ] it is a beaut. welder and it blots out all reception at around and all around 3.7 Megs. I think the arc transformer is around 6 Kv .The arc oscillates across a three gap points set. Quite a strong RF burn is obtained from the electrode , jumps maybe 3 to 5 mil. Looking forward to seeing yours in action Den .
 
V

VK3ZYZ

Guest
I think this coil does not have enough turns, unfortunately.
I have measured the resonant frequency and it is 1.5Mhz, so the previous estimat was pretty close. It would be "interesting" to have this running in the AM broadcast band. Well, maybe not ;)
I think it is an idea to aim for 100Khz or so.
A rewind looks to be in order.
 
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