sometimes you have a 12V supply to work with, sometimes you have a 24V supply to work with. 24v is common in some comm. equipment IIRC.

Michiganders can use fans as an option to cool their homes this season. Be sure to face your box fans the right direction in windows this summer. The box fans consume less energy than air conditioners ...

Be sure to face your box fans the right directions in windows this summer. Michiganders can use fans as an option to cool their homes this season. Summer heat has begun and if you're looking to save ...