Quote:
Originally Posted by demolition
Back in the C64 days, I had a teacher in school who told us that the reason the transformers were so heavy was because they filled them with asphalt.. I have yet to see one like that, but then again he did tell a lot of stories and not all of them equally true.  |
Um transformers are heavy because the main part is made of solid* iron, and has to be quite big if you need it to transform a lot of power at mains frequency.
The big transformers you see on power lines are immersed in a vat of oil to distribute the heat evenly.
*laminated