Efficient camping dimmer

摘要

Especially when you're forced to be sparing with electric power, like for example when you're camping and you're depending upon the limited energy supply of your car battery to light up your little tent, it is really important to let as little energy as possible go to waste. For one, the lights don't have to be on at full force all the time. Switching lamps all the time to adjust the lighting to the situation, is just inconvenient. But if you want to dim the lights, then do it in an energy-efficient way!