RE: [TCML] New high voltage source for VTTC

[Liviu Vasiliu <teslina@xxxxxxxxx>]

James, I live in Eastern Europe, it is a long way for a few MOTs. I have enough now (4 MOTs of different sizes and power) and I hope that the source will be ready until weekend for some experiments. And I want to demonstrate to myself that the schema is working.

I didnt want to modify the transformers because I have to wait a few mounths sometime to get one used MOT but still usable. The diode chains will just keep the currents on the right way, even the MOTs are so different (from 1000 W to 600 W)

I have the fillament transformer, it is a huge toroidal 220 V/ 12.6 V at 350 W:

http://img407.imageshack.us/img407/852/nprojii6.jpg

I have also ceramic russian caps rated for high power for the tank capacitor, some MOCs for the power source, and the tube of course. I need to get some magnet wire (still searching around, it is hard to get also, I need a large pool of wire) and have to design the cooling system.

I will try the new updated source on my old VTTC:

http://img374.imageshack.us/img374/9020/tubeca1wh1.jpg

just to see the spark improvements. If it works, I will start the building of the GU5B VTTC.

Thanx for your offer, but I like to manage with what I have in my hands (even if I would re-invent the wheel...:)). I like to tinker and experiment with things.

teslina
>
>


--- On Tue, 2/10/09, James <mustang3@xxxxxxx> wrote:

> From: James <mustang3@xxxxxxx>
> Subject: RE: [TCML] New high voltage source for VTTC
> To: "'Tesla Coil Mailing List'" <tesla@xxxxxxxxxx>
> Date: Tuesday, February 10, 2009, 6:20 PM
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx
> [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Liviu Vasiliu
> Sent: Tuesday, February 10, 2009 8:35 AM
> To: Tesla Coil Mailing List
> Subject: RE: [TCML] New high voltage source for VTTC
> 
> Thanx for the reply James.
> 
> Some Snippage:
> 
> That toob looks like a nice choice. Tesla coils need a low
> Mu toob. The
> Gu5b has a Mu of 18 or so. What did you use for a filament
> transformer?
> Did you wind your own? Man, 12.6V at 25A. Over 300 watts on
> the
> filament. Since I love the tube coils and you have a
> problem getting
> MOT's. I'll do you a service. I have tons of
> MOT's if you want to pay
> postage, I'll ship you a few for postage only. If you
> want just a core,
> I have a few of those also.
>     When making a filament transformer, I cut the MOT's
> apart with a
> grinder and make a form to rewind the primary and
> secondary. Then I
> reweld the core back after I'm finished. This way I get
> a nice, cool
> running, oversized transformer. I used about a 500 watt
> core on my
> horizontal tube coil. The two toobs (5868's) draw 200
> watts. MOT's have
> about 120 turns on the primary. This is about 30% too few
> turns. Most
> MOT's saturate at 80-100 volt input. I used 200 turns
> of primary
> (tapped) and added 10% to secondary winding for losses.
> This rewound
> transformer runs cool and quiet. Later, James
> 
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla


      
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla