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Ever wonder how do vacuum tubes actually work? Tubes are one electronic device that you can actually see how they operate. I explain vacuum tube fundamentals in this conversation with Matthew Glosson.

Matthew has been working for D.W. Fearn for the past year, mostly with Geoff Hazelrigg on the manufacturing side of the business. Recently he constructed some prototype circuits for me, as part of my new product development.

Matthew recently graduated from the University of the Arts in Philadelphia with a degree in music technology, among other things. He just completed a prototype that was part of an investigation into a possible new product concept, and he was curious about the circuit and why I did certain things.

As he was on his way in for us to discuss that, it occurred to me that our conversation might be of interest to you.

This is a recording of our impromptu lesson on how tubes work. I really didn’t have anything planned, so this is quite informal. And I would probably explain things a bit better if I had prepared more. But I still think it’s useful.

The recording is less professional than I would have liked, but we were on opposite sides of a ribbon mic, far enough apart to be properly social-distanced. You can hear the HVAC and other extraneous noise, including my dogs.

A few drawings are available for this episode, under “Extras” at the top of the page on my podcast web site, DougFearn.com

As always, thanks for listening, and thanks for your comments. I can be reached at [email protected]

email: [email protected]
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https://dwfearn.com/