Re: 12V Electronic Tranny


<bill.sloman@xxxxxxxx>
>
>> ** The output transformer is made with two ferrite E cores - so most of
>> it
>> is in free air.
>>
>> As stated - the temp rise with 100VA load is not more than 10 degrees
>> C.
>
> The temperature rise at the surface of the transformer maybe 10C under
> the conditions of your test. The heat is being dissipated inside the
> coil and inside the ferrite. For the heat to flow to the surface, there
> has to be a temperature gradient in the ferrite and in the coil. Copper
> is a pretty good thermal conductor, so you don't get much of a thermal
> gradient in the coil. The ferrite is a better insulator - nowhere near
> as good as air, but lots better than copper.


** What a load of **fucking** gobbledegook !!!!!!!

The core is TINY !!

There is SFA temp gradient .



> You'd need to drill an angled hole into the ferrite under the coil to
> get closer to the temperature rise where it matters.


** Is this ranting fuckwit on drugs ?

Or has he forgotten to take them ????



> You also need to worry about the degradation in the performance of the
> ferrite with increasing temperature. It completely stops being
> ferromagnetic at the Curie point, but it isn't up to much when it gets
> close to that sort of temperature.


** Sure - at 150 C maybe.

Not 50C.

Piss of slow man.



.......... Phil




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