John1397 Messages 189 Reaction score 18 Thread starter Oct 11, 2018 #1 This tester has been in use for 28 years no problem yet. Made out of left overs. Attachments 1011181223a.jpg 61.6 KB · Views: 799
berkeman Admin Messages 69,690 Reaction score 25,459 Oct 11, 2018 #2 Cool, do you have the schematic?
YoungPhysicist Insights Author Messages 350 Reaction score 203 Oct 12, 2018 #4 Really useful when you have a couple thousand transistors with unclear operation status