I show how a fluorescent clock display can be used like a NuTube preamplifier tube. I'd be happy to hear your thoughts on the experiment. Please, please subscribe!
hi. if you can see the grid it's generally considered too hot. that's the thought behind normal vfd operation. that is also a longevity consideration. a really neat adaptation of an older technology.
This is sweet, I was thinking of this when nutubes first came out, why not use a couple power resistors in a voltage devider configuration for the heaters?
Great work! I should start experimenting... Maybe ssrp circuit or other filament current can make it a proper preamp tube to drive a 300b or other fancy output tube. Some promo for the idea, and audiphiles might just buy it.... All remaining vhs rigs being hunted down..
Hi Rob! does that mean that in a multiple digit device they are equivalent number of triode? Though than you for sharing this stuff I was searching for about some month ago! cheers kik
I really hacked this together but I am working on a better version using a boost converter to up the plate voltage. I'll put the schematic in that upcoming video. Thanks for the comment!
Thanks man!!!! Hope it works for you!!! I just posted a video intro of a vintage 4 valve portable record player. If you're interested and have time take a watch and leave me a comment on your thoughts :)