Building a Transistor Curve Tracer

paulv @ paulvdiyblogs.net designed and build a transistor curve tracer and documents the process on his personal blog. He writes:

It’s not that I use a Curve Tracer that much, but if you want to categorize or really measure the parameters of a discrete component, there is really no other tool that can do the job well. Of course, there are very simple tools and gadgets available that do a go-no-go test, and even can give you the current amplification factor. I have one of those too, but they are very limited in what they can do. It’s also fun to design something like this, as a mental exercise, which is why I do a lot of these things. I like to design and build Test and Measurement tools.

Building a Transistor Curve Tracer – [Link]