DIY turbo timer
#11
#19
Re: DIY turbo timer
I built one with a 555 timer, a couple of caps, a pot, and a transistor driving a relay. It does just what it is supposto, it is variable from 1 to 15 minutes by turning a ****. Parts were free because I am an electrical tech, however they can be purchased for 5 to 10 bucks.