On Wed, 15 Jul 2009 14:57:11 +0100 "Alan Melia"
<[email protected]> writes:
> Hi all, I am very please to see not everyone sticks to a 12 volt
> maximum
> supply voltage
> :-))
>
> One though that occurs to me is that if one side of the MO
> transformer is
> grounded in oven service........one ought to check that the winding
> as a
> whole is sufficiently well insulated from ground to stand floating
> 2kV above
> ground.
The one I use in DC service has the ground end lifted. I have had no
problems
using this in a supply for my 2 meter amp. I series 2 for my Tesla coil
and have had
no problems either,,, I do find that it is amazing that they hold up well
just keep one hand in your pocket when messing about
the shunts do something to limit current and removing
is a simple process,, they make for a very good H V supply transformer
Bob K3DJC
There may not be the same clearance /insulation on the
> grounded end
> of the secondary as the intended high-voltage end?? On the other
> hand it
> might be quite OK. I have a certain cynicism about "consumer
> designs".
>
> Alan G3NYK
>
>
> ----- Original Message -----
> From: <[email protected]>
> To: <[email protected]>
> Sent: Wednesday, July 15, 2009 2:34 PM
> Subject: Re: Re: LF: Microwave oven transformers
>
>
> These special transformers need the magnetic bypass because a
> magnetron
> looks (as a load) like a Z diode.
> So they are powered, more or less, with a constant current source
> rather
> than a constant voltage source.
>
> In other words, the "generator" (transformer) must have a large
> source
> impedance, and that's what the magnetic bypass in the 'former does.
>
> Cheers,
> Wolf .
>
>
>
>
>
>
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