On 13 Jun 2005 12:39:44 -0700, wrote:

I need to find a transformer (converter?) that will allow me to
upconvert from 12VAC to 24VAC in order to drive a small motorized
device (50 watts) for continuous duty. I tried using a 110V/220V
'travel' transformer -- it gave me the correct voltage but not enough
output wattage (probably not enough turns on the windings). I need a
transformer rather than an electronic converter since I am driving an
AC motor... isolation isn't an issue so I could go with an
Autotransformer. Thanks.

Try an electrical supply house and look for a 110/220 or 220/440 of
appropriate power rating. They are used for various industrial
control needs as well as power conversion off 1 phase of 3 phase
feeds. All you want is the turns ratio with enough iron and copper to
handle the wattage.