Self evident!! When I was five I got out of the bath stood in front of the and noticed a shiny two pronged metal thing it was self evident that this belonged in matching receptical. I remember seeing molten metal pour from the socket fingers burned to the bone.
You should be careful how you use this term.
Thanks for the input.
If you don't know how to use either, you shouldn't be messing with them - it's a variable transformer, that's all there is to know apart from the details written on the side of it.
If I'm correct based on what other people have said, it's a single winding transformer that gives variable output. The voltage can be higher than the input.
You MUST fuse the wiper. You can optionally fuse the input. Sencore fused both.
People that service electronics combine the non-isolated variable auto-transformer with meters and an isolation transformer to work on certain equuipment. Tube and high-power audio is a prime example.
If you don't know how to use either, you shouldn't be messing with them - it's a variable transformer, that's all there is to know apart from the details written on the side of it.