Hi. One for the filing cabinet, I think.
Took a transformer out of a microwave the other day (it was at the tip. THere's always lots of microwaves at the tip for some reason).
It turns out ( :icon_wink:) that it gives 2 x 1000V from 240V in (Australia). At 850 watts :icon_twisted: That's 3 amps on the primary and almost an amp on the secondaries. Far out!
Anyway, the turns ratio is about 1:4. I presume that in the US it's still 1000V out, but 120V in, or 1:8.
So what use is that? I dunno, yet.
Maybe turn it around, for a 240V in:60V out transformer for a solid state amp??
cheers
But oh boy that'll have to be a huge SS amp, because you don't want to waste any of the tranny's power capabilities.
Taking that same transformer and using it in the US would give about +-500V and that'll be pretty good for big tube amps. Though after rectification, you'll have to drop it quite a lot.
------------
Jimbo
60V is about right for welding.. there are plenty of "build a welder from some old microwave transformer" sites on the net, for people who havn't managed to kill themselves any other way.
Grab those old microwaves when you can, a lot of work is going into doing away with the transformers. (there is about $2 of materials in there..)
im super surprised that microwaves still use linear transformers. I expected them to somehow use switch-mode supplies, or some variation...