On Mon, May 31, 2021 at 10:12 AM, Arv Evans wrote:
but in years long past there
were a couple of hams who published their work in making their own
vacuum tubes
Arv,
Thanks so much for the links.
I've been improving my vacuum plumbing and have been able to into the high single digit micron range. May try electrically heating and evaporating titanium wire to see if that will act like a getter. ?
I guess something useful is coming out of the folks that like to inhale poisonous smoke. Spools of titanium wire are readily available on Amazon.
It makes me cringe, but a generation of people may be learning basic electronics theory and real time programming through their interest in building DIY vape pipes.
I stumbled into some sites, and they have theory articles about ohm's law, temperature coefficient of metals for heater wire. Theory and building constant wattage controllers vs. constant voltage controllers. And open source Arduino closed-loop controller software on Github.
I hope they give up smoking, but retain their electronics and programming knowledge. ?
Tom, wb6b
