Apparently, this user prefers to keep an air of mystery about them.
15 How to make traces on an universal PCB? Jan 16 '13
14 Is full wave rectifier better than half wave one? Jan 17 '12
8 How does the GPS scale and deal with potentially millions of requests per second and respond in real time? Feb 10 '12
8 Why do some power adapters output an AC voltage? Dec 26 '12
7 Should I use slow fuse or fast fuse? Jan 18 '12