Today son Mike, 4ringfan , brought me a box of circuit boards that he had salvaged from out-of-service dental equipment. One of my favorite pastimes is studying an unknown circuit board to see if I can figure it out and find any potentially usable circuit configurations. As you can see I will have many hours of fun ahead of me as I sort through these:
If any interesting components or circuits appear I will be back to tell you about them.
John
Top Comments