Re: MOT power supply

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Hhchicken1-at-aol-dot-com>

Hi Chris, 
If you have the microwaves and not just the MOTs, I really recommend using 
the simple voltage doubler circuit I mentioned.  All the required components 
are in the microwaves, and it will definitely improve performance by stopping 
power-arcs from taking place at the main spark gap.  I tried my coil with 
just two MOTs and no doubler, and it ran OK for about 5 seconds before the 
gap power-arced and the streamers dropped to less than an inch long.  I've 
sent a copy of the schematic to terry-at-hot-streamer-dot-com so it should be posted 
at:
http://hot-streamer-dot-com/temp/mot.bmp

- Henry 

In a message dated 02/01/01 14:16:51 GMT Standard Time, tesla-at-pupman-dot-com 
writes: 


>
> Hello Henry, Jason and Bert, 
>
> Thanks for the advice, it was really useful. Hopefully 
> now i won't kill myself :-). I just went to the local 
> tip, and managed to get hold of 2 MOT's from 850 and 
> 950 watt ovens. Also on the way back from the tip, i 
> found another microwave that someone had chucked on 
> the grass verge, so i got that too. I havn't tested 
> any of them yet, but they all look like they'l work. 
> I'll post a message to tell u how well my Tesla coil 
> goes with them as the power supply if i get any 
> itneresteing results. I was quite supprised to manage 
> to get any MOT's, let alone 3! 
> I plan to use them in series on the secondary side and 
> parallel on the primary for around 4800 volts. I hope 
> this will be enough. I am going from my 450W NST to 
> whatever the MOT's provide, so i doubt i need to be 
> 100% efficient with the power to get an improvement. 
> Thanks, 
>
> Chris Telford