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Re: Transformers



Original poster: "Terry Fritz" <twftesla-at-uswest-dot-net>

Hi Tim,

In:

http://hot-streamer-dot-com/TeslaCoils/MyCoils/BigCoil/ACin.jpg

Tha black cubes are 20mF power factor caps.  I have ten in parallel to get
to 200mF.  Thus, I can play with the values as I please.  The silver box is
a 20 amp dual stage line filter fom Digi-Key.  I need to add a fast blow
fuse to this tranny sometime too.

Cheers,

	Terry




At 04:41 PM 1/4/2001 -0700, you wrote:
>Thanks Ted. I got the picture now. Sometimes I ask dumb questions but I 
>would rather be sure than waste time
>and money.
>Terry, I have a question for you about your transformer setup. I noticed in 
>your " AC in" jpg that you have "10
>black things" by a "silver thing" and all these "things " have wires that go 
> to the transformer. Could you
>explain your setup please? I am looking to use your setup as a model if it 
>is appropiate. Thanks, Tim
>
>Tesla list wrote:
>
>> Original poster: "Ted Rosenberg by way of Terry Fritz 
><twftesla-at-uswest-dot-net>" <Ted.Rosenberg-at-radioshack-dot-com>
>>
>> Tim:
>> We make the presumption that if you take two identical NSTs and place them
>> do the AC IN terminals are facing the same way, that the HV terminals will
>> be also the same. But maybe not. If just one of the NSTs has leads that are
>> not exactly the same (start and finish of the winding internally) but you
>> assume they are, then when you parallel the two, the NSTs will be out of
>> phase. At that point, swap the leads of just one. Sorry I wasn't more clear.
>> One picture is worth...but no pictures allowed here  ;(
>>
>> At least if you guess wrong, no damage is done  : )
>>
>> I plan to color code all my HV leads when I assemble my bank of NSTs. Again,
>> it's a safety configuration approach. As you well know, in electronics,
>> sometimes when you go OOPS you don't get a second chance.
>>
>> BTW, Terry confirmed that one MOV array has enough room to spare to handle
>> up to 180ma. I thought I was going to have to spend $50 x 3 at Digikey.
>>
>> Safety First
>>
>> Ted
>>
>> ===============
>> Subject: Re: Transformers
>>
>> Original poster: "Tim by way of Terry Fritz <twftesla-at-uswest-dot-net>"
>> <warpath-at-wtp-dot-net>
>>
>> Thanks Ted, I am wondering what do you mean by " reverse just one lead". I
>> understand parallel to mean that
>> positive goes to positive and negative goes to negative but the HV leads on
>> the transformer are unmarked(no
>> positive or negative). Do you mean that I would take the leads of one
>> transformer and just switch them?  Tim
>>
>> Tesla list wrote:
>>
>> > Original poster: "Ted Rosenberg by way of Terry Fritz
>> <twftesla-at-uswest-dot-net>" <Ted.Rosenberg-at-radioshack-dot-com>
>> >
>> > Yes, Tim. It is. Connect the two in phase to get 15KV at 60ma.
>> > It helps if the two are the same brand and config. Typically just
>> connecting
>> > the HV leads in parallel will do it. If the spark is minimal, reverse just
>> > one lead.
>> > The input is just paralleled.
>> > I plan to do exactly that for the three 15/60s I have to get 15/180.
>> >
>> > Be sure to use Terry's NST protection circuit to keep them alive.
>> >
>> > Safety First
>> >
>> > Ted
>> >
>> > -----Original Message-----
>> > From: Tesla list [mailto:tesla-at-pupman-dot-com]
>> > Sent: Tuesday, January 02, 2001 5:54 PM
>> > To: tesla-at-pupman-dot-com
>> > Subject: Transformers
>> >
>> > Original poster: "Tim by way of Terry Fritz <twftesla-at-uswest-dot-net>"
>> > <warpath-at-wtp-dot-net>
>> >
>> > Hi All, Is it possible to hook two 15kv/30ma transformers together to
>> > get a bigger bang(longer bolts of lightning) ? Tim
>