In article ,
Martin Brown wrote:
Not quite sure what you mean? On an analogue power supply, the mains
input is always set by tappings on the transformer.

There may be jumpers that can switch it from a series to parallel
winding configuration if that is what the maker intended. A lot of US
stuff tends to be cheapskate though and only work on local US mains.

I'd suggest you read my first post.

--
*If God had wanted me to touch my toes, he would have put them on my knees

Dave Plowman London SW
To e-mail, change noise into sound.