Trying not to be history. 12VDC 500ma power supply to 12VDC 300ma computer fan Answered
I have a project in mind which would utilize a 12VDC 300ma computer fan. I would like to use an old peripheral wall plug style power supply. I have one rated at 12V 500ma which I think would work fine.
Problem: How do I determine +/- if I cut the male plug off of the power supply without shorting out my apartment building or spending the weekend in intensive care? The cord is marked along one lead with a gray "dash".