[time-nuts] Transformer design.

Will Matney xformer at citynet.net
Mon Jun 27 22:18:49 UTC 2011


I knew I should have added the leyden jars and the coil!

I just saw an old Central Scientific induction coil with spark gap auction
off on ebay a while back, and this made me think of it.

Best,

Will

*********** REPLY SEPARATOR  ***********

On 6/27/2011 at 3:11 PM J. Forster wrote:

>Sadly no. You need a good impedance match from transmitter to antenna.
>
>A Tesla coil has a very high output Z.
>
>-John
>
>============
>
>
>> Bill,
>>
>> Now, if you could have connected a key to that, and a long wire antenna,
>> you would have been in business! One gigantic spark gap transmitter.
>>
>> Best,
>>
>> Will
>>
>> *********** REPLY SEPARATOR  ***********
>>
>> On 6/27/2011 at 5:36 PM William H. Fite wrote:
>>
>>>Without meaning to sound sassy, Brooke, let me assure you that there is
>>>nothing "just" about it.  While in high school I built quite a large
>>> Tesla
>>>coil with a 16kv, 60ma neon transformer, a pressurized air-quenched
spark
>>>gap, a huge variac, and a bank of 50 .15mfd (I think they were
>> .15mfd--that
>>>was a long time ago--capacitors.  The finished product, in addition to
>> being
>>>dangerous as hell to the careless operator could be heard more than a
>> block
>>>away and generated enough hash to bring TV and radio reception to a halt
>> in
>>>the whole neighborhood.
>>>
>>>And that isn't even a big one...
>>>
>>>So, no, it isn't magic and yes, it is an RF transformer with the primary
>> and
>>>secondary in resonance but, believe me, it is not "just" a transformer.
>>>
>>>Bill
>>>
>>>
>>>On Mon, Jun 27, 2011 at 3:08 PM, Brooke Clarke <brooke at pacific.net>
>>> wrote:
>>>
>>>> It turns out that a Tesla coil is not magical, it's just an RF
>> transformer
>>>> where the primary and secondary are resonated.  I took him some time
to
>> find
>>>> a mechanical structure (pipe mast insulated by wine bottles with a
>>>> capacitive top hat).  The high school "Tesla Coils" really are just RF
>>>> transformers because they omit the resonance on the secondary.
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>>
>>
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>
>
>
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