SORRY, but Sparks from a Tesla Coil are all theatrics from Hollywood. Your
system has failed. An ideal Tesla Coil emits no visible discharge as that is
totally Watts loss into the air. Properly sized, the top dome or ring
suppresses unwanted discharges; Therefore, all power is transmitted from the
un-grounded end of the transmitting secondary.
With ideal coupling, your energized coil will transmit to any nearby tuned
coils that are grounded, but have no primaries. They are called extra coils
as demonstrated in the book of Tesla's Colorado Springs notes. Please refer
to the dome on the World Transmitting Tower pictures of the station
previously at Wardenclyffe, NY. It was designed to have no ionization
visible at the dome.
The extra coils receive lots of power. But if you create a defect on the
transmitting coil's top corona ring or dome, you will experience a dramatic
reduction of power received in the remote extra coils. One form of defect is
when someone places a protruding wire or rod on the corona ring and forces
the uniform field to become a point discharge... it looks great to viewers,
but kills the output transmitted to extra coils.
-----Original Message-----
From: daniel_kline7657@xxxxxxxxx [mailto:daniel_kline7657@xxxxxxxxx]
Sent: Wednesday, August 18, 2021 1:42 PM
To: tcml@xxxxxxxxxxxxxxx
Subject: [TCML] Question about unexpected effect
Hello All,I have a question about an unexpected effect I got from a Tesla
coil.
The other day, I set up a couple of "identical" coils in a twin
configuration, where the spark gap and cap bank were between the two coils
and their secondaries were grounded to each other. I didn't use any other
ground except the house ground on the neon transformer. The secondaries were
only grounded to each other. I did that to see if I could set up two coils
and not have to use an rf ground. That configuration worked well, no
problems.
Then, I wondered if I could set up one of the coils normally in a
single-coil configuration, but still use the other coil's secondary as
ground for the coil I wanted to run. If that worked, that would allow me to
run a single coil without a dedicated rf ground.
When I tried to run the single coil that way, I got nothing from that coil,
but I got normal arcing out of the coil I was using as ground! I don't
understand this. The primary of that coil was completely disconnected and
wasn't in the circuit all. How could I get arcs out of the coil I was using
as ground? Because it wasn't really ground and that's where all the energy
was going? Why didn't I get anything out of the single-coil?
Any insights will be appreciated.Thanks,Dan K.
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