I want to run a small electric fan from a 7.5v 2.5amp (max) solar panel.

I want it to run on less than gloriously sunny days - what kind of motor should I get? If I use a 5v motor will it burn out the first all-sunny day?

maestro88 years ago
Because the power output from a solar panel is not very predictable (even if you're the world's best weather forecaster), it's best not to power anything directly from a solar panel. A voltage regulation circuit, or at least an overvoltage protection circuit, should be put between the panel and your motor.
plumber_bob8 years ago
You should probably do some testing before you get it all set the way you want it. But I doubt you'll burn anything up, it may run faster than intended, (hey a voltage regulator might be good). Anyway from what you said I doubt anything will burn up, but keep an eye on it for the first bright day and see.