On Wednesday, November 22, 2017 at 1:50:46 PM UTC-5, Stu jaxon wrote:
hi group, does anyone know if i can use this= 750 Watt Voltage Converter Transformer Heavy Duty Step Up/Down 750W 110-220V as an isolation transformer, it does have output of 110v, ? thanks,

Most voltage-converter transformers are auto-transformers and do not provide isolation. As Mr. Cook suggests, see if you get continuity from the primary to the secondary.

http://www.electronics-tutorials.ws/...er/trans28.gif This is an auto-transformer.

Peter Wieck
Melrose Park, PA