Re: [TCML] Different sort of MOT

[jimlux <jimlux@xxxxxxxxxxxxx>]

mrapol@xxxxxxxxxxx wrote:
> Like many other I expect, I harvest parts from cast-off microwave ovens. 
> I don't usually bother with MOTs as power sources, but I found an 
> unusual one I am curious about.
>
> Yesterday I got a working Panasonic oven, and the transformer is a light 
> item with a plastic frame, a few turns of braided primary and a few more 
> turns of secondary around a simple ferrite D shaped core. (It looks more 
> like an old flyback than the standard MOT). Its mounted on a circuit 
> board with an imposing array of resistors, diodes, and film capacitors.
It's the new wave of HV power supplies.. a switching supply.. higher 
efficiency, lower mass, smaller, etc.  Puts out DC (only).. when they 
first came out, there was someone who was going to try using it in a TC, 
but I don't recall how it went.

The challenges are:
1) it's DC output
2) it's only a few kV (enough for a magnetron).. (usually you use 2 or 4 
MOTs in series)
3) it might be sensitive to damage from transients coming back from the coil

They ARE interesting though.  Much better than the "electronic NST", 
because the load properties are more like what we want: serious power 
with reasonably stiff regulation.
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