Re: [TCML] MOT wire question

[G Hunter <dogbrain_39560@xxxxxxxxx>]

Hi Brian,

Here's a simplified explanation of MOT windings and connections:

http://myweb.cableone.net/grcarhunter/mot_chat.htm

The 3 turns of fabric covered wire is a low voltage secondary used to heat the filament of the magnetron tube.  It is not useful for coiling.  Just cap the ends and tuck these leads out of the way.

Next time you field strip a dead microwave oven, look inside the enclosure for a schematic.  Many ovens have a schematic diagram--including a pinout for the MOT--pasted inside the cabinet.  Inside more than one oven I have found an envelope containing a detailed schematic, a guide to important test points, and a replacement parts list.

Cheers,

Greg

--- On Tue, 6/22/10, Brian Hall <brianh4242@xxxxxxxxxxx> wrote:

> From: Brian Hall <brianh4242@xxxxxxxxxxx>
> Subject: [TCML] MOT wire question
> To: tesla@xxxxxxxxxx
> Date: Tuesday, June 22, 2010, 8:25 PM
> 
> I've got a couple of MOTs and there is this 'middle' fabric
> coverered wire tucked in for a turn or two just under the
> secondary.  Its what hooked into the MOC and
> magnetron.
> 
>  
> 
> I see that the output for the secondary is there but just
> unused.  
> 
>  
> 
> What's the deal with this third wire?  Can I, or
> should I, take that out if using the MOTs for a tesla coil?
> 
> Or how would it help me if i left it in there and hooked up
> to it?
> 
> 
> ---------------------------------- 
> Brian Hall 
> 
> 
> 
>     
>         
>           
>   
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