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RE: [TCML] Terry Filter



Hi Paul,

I myself have no experience (successfully) using OBIT's.  My only ill-fated experience was when I was a total newbie and thought I could series the outputs from two OBIT's.

I can't think of any reason OBIT's would be intrinsically inferior to NST's.  Both have similar construction and specs, and both are current limited.  I would like to think (HA!) that OBIT's being in a more critical application, might be built a bit sturdier than something that just needs to light a sign?  Perhaps it's that the used OBIT's that I and others used were pulled by a serviceman for good reason, and may work just fine on a good day, but...?

BTW, 9kV@50mA sounds unusual for an OBIT.  Every one I've seen is rated 10kV@23mA.  OBIT's typically have inconvenient HV terminals, designed to be attached directly to the oil burner.  Are you sure you don't have an NST?

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Paul Brodie
> Sent: Monday, December 21, 2009 5:34 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Terry Filter
> 
> Maybe neon sign transformers are better but I got this OBIT for $20 and I've
> already built 2 neon sign transformer coils and as the Monty Python players said,
> "and now for something completely different!"
> 
> So, that said, why do you believe NST's are better than OBIT's? I have no opinion,
> having no experience with OBIT's but I have seen them recommended as TC
> power sources many times by many different people. As usual, I'm just being
> curious.
> 
> Oh yeah, are OBIT's current limited, like NST's or will I have to treat this the same
> as I do the MOT's I have used?
> Paul
> Think Positive

<snip>
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