So it sounds like there’s enough interest to give a couple of classes a shot and see how much interest there is in the broader community. I’ll work on submitting two classes for the August/September time frame. Thanks to all who commented.
I’m leaning towards:
- Intro to vacuum tube electronics. Fundamentals and safety
- Choosing and using a tube tester for tube electronics projects (hopefully Rich can help out, or at least bring some of his testers up).
For the first class, I think it’d be a good idea to make that one mandatory for anyone new to tube electronics due to the high voltages involved. It would cover how tubes work, different types and uses, equipment needed, new manufacture vs old stock, basic tube circuits as used in audio applications, common topologies/architectures, and an overview of several good starter projects of varying difficulties. The safety portion would cover proper measurement techniques, using isolation transformers/importance of floating units under test/build, variacs vs isolation transformers, overview of the “death capacitor” and old, dangerous grounding techniques, adding a ground prong to old units, etc. There’s enough there that it might be a good idea to make the safety portion a class of its own.
For the testing class, I have three working testers, a Hickok 750, a Jackson 637 and a little Realistic emissions tester. I’m about to start work on a modern USB connected curve tracer based on a board/software from France. So I can basically cover true Gm testers, dynamic mutual conductance, cathode emissions testers and PC-connected curve tracers. It would be nice to fill in the gaps/show other examples from your collection, Rich. Happy to work with you as much as you’re willing to develop/teach the class.
Thanks again all.