[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [TCML] Spark gaps, Solid state switches and diodes
Hi Stephen,
You might want to read this page of Richie Burnett's regarding resonant
charging. It gives some good info on resonant rise in a transformer
should a gap have a problem like mis-firing or say if the gap was opened
too wide.
http://www.richieburnett.co.uk/resonant.html#resonant
Stephen Hiscock wrote:
I might have to upscale the primary caps a bit and perhaps just
replace them.
Do you have any good cheap capacitors that you can recommend or even
sell to me.?
No, but you might want to write to DC Cox on this list as he sells MMC
caps from time to time and the well tested CD 942C series.
Regarding the tube size on the primary - I didn't mention it because I
thought it didn't matter too much.
I'm actually using a 1 inch wide Aluminum strap that is about that is
about 3mm (2/16ths inch).
I'm assuming it has enough surface area for a good conductor at those
frequencies...
A flat ribbon primary can be different in L from that of a tube tube
primary, but not always (depends how we model the tube primary).
Always best to use the inductance of a ribbon primary using ribbon
primary equations.
http://www.classictesla.com/java/flatribbon/flatribbon.html
In your case:
Pitch = 0.94, Height=1, Thickness=0.125, I.D.=13.5, Turns=12.5
The calculator should show 37" O.D. at 102uH. Then just change the turns
and calc for each tap point desired. This will give you L (and you
already know C and Vp).
I will have to do some redesign of my spark gap and check my ground
connections and etc.
I think I'll check the current each transformer is supplying because I
used to get 3-4 feet out of my coil.
Yep, good idea. Ensure each side of the NST can draw a spark to the
case. It's not uncommon to kill one side of an NST at which point it
produces only 1/2 voltage.
Take care,
Bart
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla