For those vacuum tube aficionados among you, if you can't quite find the right triode for your application, why not make your own? Here's a video (17 min) by Claude Paillard, a French amateur radio operator, who visually shows you how (complete with a jazzy music soundtrack):
The video also shows a test of the transfer curves of the finished device, as well as its operation in an actual circuit.
One of the excellent edu video i've ever seen,it's wonderful to see a v'tube come to life in a not so big ordinary workshop.Highly educational & piratical value in general.
As a v'tube user in late 60's I was extremely pleased to see it WORKING in the DIY kit radio.(TRF?)
Any way more & more audio enthusiasts coming to appreciate v'tube quality over s'condt devices.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.