18 Sep
1998
18 Sep
'98
5:41 p.m.
Max Eskin wrote:
I looked in Radio Shack, at some step-down transformers for 'traveling
abroad'. There is a price range, with some 'for heating appliances
only' (the cheapest) and the higher priced ones allow motors, and
the $34 ones allow electronic devices. What is the difference among
these units? Also, could a transformer such as in these theoretically
be reversed and used for step-up purposes?
The ones for heating appliances are basically some type of switching
circuit, while some of the others are actually step up/down transformers. I
have seen some of the units capable of 220 to 110V operation and vice versa.