How to create a step-down transformer?

[christoopher24]

Hello,
I am need of knowing how can you create a step-down transformer.
I know about ratios and things, but if for example there is a 10:1 ratio why is there so much more wire turns in the transformer, cause clearly you don't just make 10 loops.
So anyway, how can I create a step-down transformer?
Let's say for example 110v 60Hz, to 32v and less than 700mA.
Any help would be appreciated!
Thanks!

 

[(*steve*)]

You need lots of turns or the transformer will have very low inductance and at 60Hz will draw a huge current.

Whilst this current is theoretically not in phase with the voltage and theoretically consumes no power, in practice the I^2R losses (which are real) and limitations in other areas mean that it's highly undesirable.

 

[daddles]

Lots of articles about this have been written over the last century. Take a look at the following articles in Popular Mechanics: Feb 1950, May 1931, Dec 1932. These are all easily available on google books in the US (I've heard folks in other countries don't have access to them though).