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Re: Definition of Tesla Coil ??
From: Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: Wednesday, September 17, 1997 3:12 PM
To: tesla-at-pupman-dot-com
Subject: Re: Definition of Tesla Coil ??
Hi Phil,
> From: Phil Chalk[SMTP:philoc-at-ozemail-dot-com.au]
> Sent: Wednesday, September 17, 1997 6:43 AM
> To: Tesla List
> Subject: Definition of Tesla Coil ??
>
> Dear Learned friends,
>
> There's been a lot of discussion, recently, about whether or not TV
> flybacks, etc qualify as Tesla coils.
> I've often wondered, & don't recall ever having seen a useful
> definition. Is it asking too much to define the term 'Tesla Coil' ? I
> bet Nikola never called his that - I presume it's a term that evolved
> much later to cover a whole range of HV transformer devices.
> I once had a very old Cossor CRO (with a 5BP1 tube) which had a 'Tesla
> Coil' EHT supply for the 2 kv or so required by the tube. It's a vague
> memory, & I was young, but it was just an air-cored RF transformer on
> that brown paper-phenolic stuff, & didn't look a whole lot different
> from the IF transformers of the day - size & shape-wise.
> So, I'm sure some of you would like to offer me your _definition_ of a
> TC. What, exactly, characterises one, & on what basis can you assert
> that item A is a TC & item B is not ?...........
For my money a TC uses a capacitor for primary energy storage and has
at least two coupled tuned circuits. Basically capacitive discharge.
Malcolm