"Andy Cuffe" > wrote in message
...
> On 08 Dec 2004 19:23:31 -0500, Sam Goldwasser >
> wrote:
>
>
> >The sample I have drives both the magnetron high voltage and filament
> >from the same transformer. I would think this is hard on the magnetron
> >at moderate power where the filament isn't as hot as it should be but
> >perhaps it's not a big issue.
> >
>
>
> The best microwave design I've seen is an Amana from the late 70. It
> has a separate filament transformer, so it can modulate the HV at
> something like 1 Hz while keeping the filament hot. This is fast
> enough to stop things from exploding/boiling over while the magnetron
> is on. It's the only microwave I've had where the low power levels
> were actually useful. It also has to be easier on the magnetron.
> Andy Cuffe
>
Those old Amanas were great, wouldn't mind having one now even, nice
stainless cavity, metal control panel, really slick.