Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>
Ground one of the bushings. also be sure to
make the connection to the inside of the
Archemedian spiral primary to the grounded
bushing side of the spark gap. Run the other
bushing to the opposite side of the sparkgap and
then thru the series cap into the "hot" tapped side of the primary.
Dr. Resonance
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, January 12, 2006 7:35 PM
Subject: Re: tesla coil does not work...
Original poster: "Langer Giv'r" <transworldsnowboarding19@xxxxxxxxxxx>
its a double pole xfrm with mid point ground
connected to the ground on my safety gap, and the
two hot wires are connected in series with the LC
ciruit, and in paralell with the main spark gap
From: "Tesla list" <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: tesla coil does not work...
Date: Thu, 12 Jan 2006 12:48:56 -0700
Original poster: "Qndre Qndre" <qndre_encrypt@xxxxxxxxxxx>
Hey Dr.,
sounds like he is using an OBIT since his
"supply" has 10 kV @ 23 mA which sounds very
much like an OBIT ;-) . OBITs are usually
midpoint-grounded so he will have to hook the
center-tap of the transformer's secondary
(which is usually connected to the iron core)
to RF ground so he gets two "hot" wires out of
his transformer having 5 kV each in reference
to ground, being 180° out of phase. Grounding
the core (and therefore the center tap) and one
bushing will result in shorting out the transformer's secondary.
Regards, Q.
----Original Message Follows----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: tesla coil does not work...
Date: Wed, 11 Jan 2006 18:35:12 -0700
Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>
Do you have any connections to the center
bushing on the low voltage side of the
xmfr? Only the two outer bushing are
used. Ground is connected to case, and one of
the HV bushings should also be connected to this case ground.
Dr. Resonance
Original poster: "Langer Giv'r" <transworldsnowboarding19@xxxxxxxxxxx>
When i turn it on, the spark gap fires on a
very short distance, and i smell something
burning, but I dont think its my transformer
because it still works... I am seeing
absolutely NOTHING on my secondary, so i
think my capacitors might have something
wrong with them. Help would be increadible, thanks!
Seems as something wrong with the capacitors. Can you measure the
capacitance? Are you not using too small resistors across the
capacitors? The gap fires if just placed across the transformer?
Are the support structures of the assembly made with materials
with enough insulation?
Antonio Carlos M. de Queiroz