Re: DC Tesla Coil

From: 	Adam[SMTP:absmith-at-tiac-dot-net]
Sent: 	Saturday, January 03, 1998 9:14 PM
To: 	Tesla List
Subject: 	Re: DC Tesla Coil 

>    If my tank capacitor is charged with DC only, it seems to me that it
>would be much easier to get a solid resonance occuring in the tank circuit
>with a fixed spark gap (well quenched).

I think you would need a mechanical breaking gap like a rotary gap to 
properly quench a DC supply.  

>    For instance, lets say my TC is resonant at 100 khz, it seems to me that
>all that is necessary to get a solid resonance is a fixed spark gap that
>will quench and fire 100,000 times per second

No, you want to hit the primary with an impulse, at let the natural 
resonance of the tank ring it up to a high voltage.  A few hundred breaks 
per second gives the secondary a chance to ring nautrally in response.  
You don't want to overdrive the coil or excite higher harmonics.

>    Can a fixed spark gap be quenched at that rate?

Not by any means I am aware of, nor would it help us any.

>To get DC into the tank
>capacitor, is it as simple as feeding rectified AC into your transformer?

Yes, it's that simple, but not something you need or want to do.  60Hz is 
quite practical to work with.


Adam Smith
Epoch, Inc. Digital Music Project

www.tiac-dot-net/users/absmith/                 MP3 Demo Tracks Now Available!