The Fantastic fan used to use a literal heating element I call it, which looks like a coil spring element you would see on an electric heater. The Low setting uses two springs.
Im not looking for that or any resistor device that just waste electricity.
If you have actual knowledge and a link that is fine, but amazing how many people read a post, know nothing at all about the topic, spend 3 seconds on a search and post as if they are now experts, and think that is all that is to it, still knowing nothing at all about the topic. Nobody is interested in that.
Tiny amounts of electricity are what camper batteries have, so yes, I am worried about tiny amounts of electricity.