[TCML] multiple miniature transformers

[David Rieben]

Hi Conor,

Sounds like it's time to upgrade to a pole pig. ;^)

David Rieben



----- Original Message ----- 
From: <ConorPerry at comcast.net>
To: "Tesla Coil Mailing List" <tesla at pupman.com>
Sent: Thursday, November 12, 2009 4:49 PM
Subject: Re: [TCML] multiple miniature transformers


>I found a good source for NSTs in Craigslist and took advantage of it. 
>There was quite a stack to dig through, but I found a set of 8 matching 
>NSTs and bought the batch for $100.  They are 30mA @ 15,000volts (450va). 
>They are setup as two sets of 4, double stacked on a wheeled cart.  It's 
>too much for one person to lift, but easy for two people, so probably 
>around 100-120lbs.  I've run it at 4.5kva on a jacobs ladder.  Still 
>gathering parts for a larger Tesla coil.
>
> Wish I could find more 120mA @ 12,000volts monsters like I use on my 
> little coil.
>
> CP8071
>
>
> ----- Original Message ----- 
> From: "Neal Namowicz" <neal at imagesbyneal.com>
> To: "Tesla Coil Mailing List" <tesla at pupman.com>
> Sent: Thursday, November 12, 2009 6:51 AM
> Subject: Re: [TCML] multiple miniature transformers
>
>
>> This is definitely one I have a little experience with. I started 
>> accumulating nst's a while ago, and then began tying them together. At 
>> the moment, I'm up to 6, 9kv/30ma. I have them mounted on a 2' x 2' 
>> platform with casters. As my daughter's boyfriend and I were lugging it 
>> up the basement stairs for halloween, I too wondered why I just didn't 
>> get a small pig. However, there's still the issue of current control that 
>> I don't have to deal with, as I would with a pig. I would stick to using 
>> my variac, rather than switching them on individually, too. I prefer to 
>> ramp the power up slowly, just in case. I'm only using a safety gap for 
>> them at the moment, but I try to be conservative and not push them beyond 
>> 80-85% on the variac.
>>
>> Neal.
>>
>> ----- Original Message ----- 
>> From: "Paul Brodie" <pbbrodie at bellsouth.net>
>> To: "Tesla Coil Mailing List" <tesla at pupman.com>
>> Sent: Wednesday, November 11, 2009 12:33 PM
>> Subject: Re: [TCML] multiple miniature transformers
>>
>>
>> Wouldn't 10 neon sign transformers and associated equipment be just about 
>> as bad as lugging around a pole pig or maybe even worse?
>> Paul
>> Think Positive
>>  ----- Original Message ----- 
>>  From: Chris Rutherford
>>  Hi All,
>>
>>  A couple of years back I made a TC powered by 4 parallel NSTs,
>>  providing 1KVA, which worked reasonably well.  I was thinking about
>>  extending the idea using 10 larger (identical) NSTs to provide 10KVA.
>>  I would individually protect each NST using something like a Terry
>>  filter, and also place a switch on the mains side of each transformer,
>>
>> _______________________________________________
>> Tesla mailing list
>> Tesla at pupman.com
>> http://www.pupman.com/mailman/listinfo/tesla
>
> _______________________________________________
> Tesla mailing list
> Tesla at pupman.com
> http://www.pupman.com/mailman/listinfo/tesla