1Instructables1,919Views8CommentsJoined July 5th, 2013
I am a retired physician. I still spend a large block of my time learning about new components, circuits and refreshing knowledge about laws of electronics. I do all these mostly using parts from old devices. My 1st big project was making a superheterodyne radio while I was in medical school using thermionic valves! I have a diploma in electronics and one in computer science through online courses.