Is that a joule thief?

[Groundloop]

I think i got it. The gap introduces a capacitance which varies with  electrode distance, so as the frequency. After the charging resonant circuit, this capacitance doesn't affect anymore the secondary coil, so frequency will be steady (as far as i think that i understand! )

Jeg,

You said in a earlier post that you will use a rotary spark gap. I would guess that the RPM of
the rotary spark gap will set the switching frequency to your Tesla coil primary? And if you
have a constant power available into your rotary spark gap, then the power going into
your primary Tesla coil will be lower as the RPM goes up. This because your primary capacitor
will be charged less by your high voltage power supply for each firing at your spark gap. But I
think that the frequency will be set by the RPM of your rotary spark gap.

GL.

[Groundloop]

My JT battery voltage is now [28.04.2013 1900] at 1,537 Volt. This is a drop of
0,031 Volt during 21 hours. The LED is light dimly.

GL.

[Groundloop]

My JT battery voltage is now [29.04.2013 0400] at 1,508 Volt. This is a drop of
0,029 Volt during 9 hours. The LED is light dimly.

GL.

[Groundloop]

My JT battery voltage is now [29.04.2013 1600] at 1,489 Volt. This is a drop of
0,019 Volt during 12 hours. The LED is light dimly.

GL.

[Groundloop]

My JT battery voltage is now [29.04.2013 2130] at 1,304 Volt. This is a drop of
0,185 Volt during 5:30 hours. The LED is light very dimly.

GL.