Re: Transformer question

--- In CAD_CAM_EDM_DRO@egroups.com, Dick Ganderton <dick@g...> wrote:

> In simple terms, yes. You can even go the other way! The limit to

that is

> the breakdown voltage of the insulation.

Sorry to argue, but you can't. A 110v primary
transformer will blow very badly if connected to 240v.
Mains transformers are matched to the voltage and
frequency of the mains AC supply.

The primary needs to have the correct inductance.
Even going from a 50Hz to 60Hz country can have
significant effects, not so much with small
appliance transformers but larger ones will run
out of spec at the wrong mains frequency.
-Roman

>
> >Do transformers work on a ratio of input to output, or are they

strictly

> >for the rated voltages? In other words if I have a 240 to 120 step

down

> >and I put 120 on the primaries will I get 60 V on the secondaries?
> >What are the practical limits to doing what I described?
> >Thanks