Hi dR, I'll try to give my opinions to you're questions mainly, and try to explain
some observations. I'm in the process now of putting together some coils to
work from a spark gap, it'll take me a while but when I get setup i'll be in a
better position to contribute to the spark gap method discussion.
The secondary of the flyback?
The secondary of the transmitter, the end that joins to the other coil.
I found with my LV setup that when the secondary is ground connected the
transmitter works better as a regular Tesla coil but the currents to the other
coil are reduced to almost nothing. This is different with the pot because
compared to the Earth the pot is very small. To get good transfer using the
ground or connected to the ground a frequency below 35 Khz is recommended
by Tesla. In my spark gap test video I connected both coils to ground, but
they are very close, close enough for other types of transfer to occur, but if I
just connect both coils together (remove ground connection) or to a pot the
transfer is much better, by lots. Unless you can resonate the planet the
actual Earth connection will just make the transmitter work better for
producing voltage at the top terminal.
Nah second storm fizzed out but they are still around.
Adding the diode to the HV output halves the voltage because it is a half
wave rectifier. The spark through the spark gap must be in only one direction
not AC.
In parallel with the mirroring capacitors (350pF)?
What's that gap in the wire in Fig. 126 supposed to be?
The gap in the wire transformer side of the cap is just missing ink.
I would rectify the output after the AC resonance cap, on the output coil go's
a FWBR the DC charges the HV caps and the caps discharge through the
spark gap and load. It could be done by the output sine wave exceeding the
breakdown of the spark gap while charging a very small cap and discharging it
each cycle but that's not how I would do it.
The way I'm using the transformer to pulse the ignition coil relieves the stress
and heat on the transistors, I found my ignition coil with a .1 uf cap across it
likes to be pulsed at 1.4 Khz and 2.8 Khz for the best output to input ratio.
My transformer outputs a AC pulse, stepped up in voltage 1:3 so I only need
use 12 volts to drive it to get 60 volts output.
What I'll be doing is setting up a base config, to establish a reference point to
experiment from, like I did with the low voltage setup. The connection to the
receiver will be just a wire "not" connected to ground. Then when I have it
tuned and get a good output I can start to experiment.
I think the best way is to simplify the entire setup to run a load from the
receiver output coil as the only objective, a light is good so then it burns all
the time and any reduction or increase in output can be seen.
I would go to a straight wire connection between the coils and separate the
winding's (turn spacing), because on the receiver even though there is no
arcing it would be affecting the coil, I think if the turns are spaced then the
space needs to be uniform throughout.
Without some way to adjust the capacitance of the receiver output coil,
getting a good output will be very difficult.
Gotta run. Off to town.
Cheers.
some observations. I'm in the process now of putting together some coils to
work from a spark gap, it'll take me a while but when I get setup i'll be in a
better position to contribute to the spark gap method discussion.
Quote:
Have you tried it without the earth connection on the secondary ? And if so what happened ?
Have you tried it without the earth connection on the secondary ? And if so what happened ?
I found with my LV setup that when the secondary is ground connected the
transmitter works better as a regular Tesla coil but the currents to the other
coil are reduced to almost nothing. This is different with the pot because
compared to the Earth the pot is very small. To get good transfer using the
ground or connected to the ground a frequency below 35 Khz is recommended
by Tesla. In my spark gap test video I connected both coils to ground, but
they are very close, close enough for other types of transfer to occur, but if I
just connect both coils together (remove ground connection) or to a pot the
transfer is much better, by lots. Unless you can resonate the planet the
actual Earth connection will just make the transmitter work better for
producing voltage at the top terminal.
Nah second storm fizzed out but they are still around.
Adding the diode to the HV output halves the voltage because it is a half
wave rectifier. The spark through the spark gap must be in only one direction
not AC.
Quote:
Can you try some 4000 volt capacitors charged from the receiver and
discharged through a light bulb ?
Can you try some 4000 volt capacitors charged from the receiver and
discharged through a light bulb ?
What's that gap in the wire in Fig. 126 supposed to be?
I would rectify the output after the AC resonance cap, on the output coil go's
a FWBR the DC charges the HV caps and the caps discharge through the
spark gap and load. It could be done by the output sine wave exceeding the
breakdown of the spark gap while charging a very small cap and discharging it
each cycle but that's not how I would do it.
The way I'm using the transformer to pulse the ignition coil relieves the stress
and heat on the transistors, I found my ignition coil with a .1 uf cap across it
likes to be pulsed at 1.4 Khz and 2.8 Khz for the best output to input ratio.
My transformer outputs a AC pulse, stepped up in voltage 1:3 so I only need
use 12 volts to drive it to get 60 volts output.
What I'll be doing is setting up a base config, to establish a reference point to
experiment from, like I did with the low voltage setup. The connection to the
receiver will be just a wire "not" connected to ground. Then when I have it
tuned and get a good output I can start to experiment.
I think the best way is to simplify the entire setup to run a load from the
receiver output coil as the only objective, a light is good so then it burns all
the time and any reduction or increase in output can be seen.
I would go to a straight wire connection between the coils and separate the
winding's (turn spacing), because on the receiver even though there is no
arcing it would be affecting the coil, I think if the turns are spaced then the
space needs to be uniform throughout.
Without some way to adjust the capacitance of the receiver output coil,
getting a good output will be very difficult.
Gotta run. Off to town.
Cheers.
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