Thermionic valve projects?

[default]

On Sat, 27 Jul 2019 13:39:49 -0700 (PDT), wbeaty <billb@eskimo.com>
wrote:

More weird tube circuits (pdf):

https://www.americanradiohistory.com/Archive-Radio-Craft/PUBLICATIONS/Radio-Craft-1946-Unusual-Patented-Circuits-1944-1946-30.pdf

My favorite is the high-speed microwave beam-scanner based on
reflecting the microwaves off of the sweeping electron-beam
inside an oscilloscope CRT. (We forget that electron-clouds
are a conductor. A SINGLE ELECTRON is a conductor: when
exposed to a voltage, a current appears! Same with ions in a
vacuum. A moving electron-cloud is a moving mirror for radio
waves. So weeeeird.)



Also, page way down on this below, for lots of PDF booklets
for tubes-hobbyists
https://www.americanradiohistory.com/Hugo_Gernsback.htm

That brings back some memories.

 

[Rheilly Phoull]

On 21/07/2019 1:42 am, Peter Percival wrote:

Peter Percival wrote:
Here https://www.rapidonline.com/valves there are a variety of
thermionic valves.  Where can I find projects that utilize them?  I'll
also need a HT power supply.

For the latter, I though building my own would be a good idea.  And if
building one is a good idea then building two must be twice as good.
Thus -

(a) http://www.pmillett.com/HV_bench_supply.htm;
(b)
http://www.arrl.org/files/file/QST/This%20Month%20in%20QST/August%202014/JULSTROM.pdf.


The worst that can happen is that I'll electrocute myself.

  Any thoughts?

You will have to dig deep in the pocket if it takes 5 807's and to find
the tranny would be fun

 

[Peter Percival]

wbeaty wrote:

More weird tube circuits (pdf):

https://www.americanradiohistory.com/Archive-Radio-Craft/PUBLICATIONS/Radio-Craft-1946-Unusual-Patented-Circuits-1944-1946-30.pdf

My favorite is the high-speed microwave beam-scanner based on
reflecting the microwaves off of the sweeping electron-beam
inside an oscilloscope CRT. (We forget that electron-clouds
are a conductor. A SINGLE ELECTRON is a conductor: when
exposed to a voltage, a current appears! Same with ions in a
vacuum. A moving electron-cloud is a moving mirror for radio
waves. So weeeeird.)



Also, page way down on this below, for lots of PDF booklets
for tubes-hobbyists
https://www.americanradiohistory.com/Hugo_Gernsback.htm

That looks like a lot of interesting stuff. Thank you.

--
"He who will not reason is a bigot;
he who cannot is a fool;
he who dares not is a slave."
- Sir William Drummond