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Re: Re: Coil Trouble

Original poster: joseph walker <joseph-walker@xxxxxxxxxx>


========================================
Message date : Dec 23 2004, 06:45 PM
From : "Tesla list"
To : tesla@xxxxxxxxxx
Copy to :
Subject : Re: Coil Trouble
Original poster: robert heidlebaugh

If you live near the sea coast wood is a probible trouble. Bucket caps work
well if if they are clean. If you dont wipe the top area clean of all salt
the salt will conduct around the edge and short out your cap. The third
problem could be tuning. The Humm of your transformer suggest a shorted
circuit probibly in the primary circuit such as the capacitor.
Robert H
--


> From: "Tesla list"
> Date: Sat, 18 Dec 2004 15:38:00 -0700
> To: tesla@xxxxxxxxxx
> Subject: Fwd: Coil Trouble
> Resent-From: tesla@xxxxxxxxxx
> Resent-Date: Sat, 18 Dec 2004 15:39:26 -0700 (MST)
>
> Original poster: Terry Fritz
>
>
>> X-Envelope-From: Bob81818@xxxxxxx Sat Dec 18 12:26:08 2004
>> X-Original-To: tesla@xxxxxxxxxx
>> Delivered-To: tesla@xxxxxxxxxx
>> X-Greylist: delayed 305 seconds by postgrey-1.16 at poodle; Sat, 18 Dec
>> 2004 12:26:08 MST
>> From: Bob81818@xxxxxxx
>> Date: Sat, 18 Dec 2004 14:21:03 EST
>> Subject: Coil Trouble
>> To: tesla@xxxxxxxxxx
>> X-Mailer: 8.0 for Windows sub 6033
>>
>> Hello everyone,
>> I'm kinda stuck on why my coil wont work, obviously. First off,
>> the problem more specifically is when I power it up, the gap fires once
>> or twice and then all I hear is the hum of the transformers. When its
>> dark I can see a 1 inch arc from the toroid to a grounded wire, but
>> that's only once or twice (along with the gap). I believe it might be due
>> to mounting almost everything on wood. I always had that thought in the
>> back of my mind but never really wanted to listen. I'll list my specs
>> down below.
>>
>> Secondary:
>> 4.5" by 25" with 26awg
>> TeslaMap says 1,403 turns
>> 6" by 22" aluminum duct toroid
>> first sec winding is 2.5" above first primary winding
>>
>> Primary:
>> .25" copper tubing spaced .25" apart
>> about 9 turns tapped between 8-9
>> 20 degree inverse cone
>> inside hole is about 5" raised about 1.5" off the mount board
>>
>> Power supply/etc.
>> 4 stack MOT (ballast is sec. shorted MOT) run at 120v unknown amps
>> 50nf cap (5 bucket caps)
>> now using single static gap (used to use multi gap mounted on wood
>> which performed less results)
>>
>> If inductance calculations are needed or anything teslamap would have just
>> ask. Same with other information. If remounting is the problem, I may have
>> a cheep source of acrylic. Any suggestions or comments will be greatly
>> appreciated. This is my second coil, my first was a 3.5"inch (but it
>> actually worked). Thanks for your time, I look forward to any responses.
>> Dan E.
>
>


you can use choping boards from aldi ect very cheep 99p each for a 40 by 20cm pice at about 1 cm thick