Uploaded December 2013 | Updated September 2026, 1 week ago

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This is PART 1 ! (Link below to part 2)

In this video I design, build and test my DIY transistor tester !
I tried to make it as cheap as possible. It uses the TL074 opamp, a 3.3 v regulator, a LM334 current source, and some pasive components.

Part 2 - youtu.be/F7yD6kOVqS0
Find info and PCB Layout here: ec-projects.com/side/DIYTransistorTester