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.
Join our online Radio Show on Friday 11th July starting at 2:00pm Eastern, when EETimes editor of all things fun and interesting, Max Maxfield, and embedded systems expert, Jack Ganssle, will debate as to just what is, and is not, and embedded system.