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tlfong01
tlfong01
1:41 AM
@Circuitfantasist Well, in some forums, you have little privilege if if you have low reputation points. So I very soon realized that the elites can do many things I never dream of, like monitoring user, me answering in real time, and delete the whole question before I complete my first sentence, or close it after my answer. So I usually do not start answering before the elites does and gets their upvotes, ...
So I am glad to learn that CD is making a change, removing the reputation points scheme by 'ability' points and let the newbies to have many privileges, so not feeling being cyber bullied, ...
Anyway, I still have not though about how to fix the unstable Q point in the mysterious NDR region, though I now have a better idea of the load line, but not yet good enough to analyse and design a load time to oscillate the tunnel or catch the electrons crossing the quantum tunnel.
I did read some guys suggesting to use an inductor to forbid the electrons to jump over (current suddenly decreasing), so the naughty electrons can only walk slowly after reaching the Ipeak, and crawl slowly down hill and stay steadily at the Q point of the load line. The GE62 TD guide says we need to choose the Rd carefully, otherwise circuit won't be stable, ... Perhaps I should explain in more details my test plan in another post in tunneldiode.blogspot.com.
 
tlfong01
tlfong01
2:20 AM
BTW, when visiting Physics SE, I found #***The photon*** in the tunnel diode discussions. I thinks his answers are good. So I should pay more attention to his answers to learn more about tunnel diode: (1) https://electronics.stackexchange.com/questions/258452/what-is-the-behavior-of-circuit-with-multiple-q-points
(2) https://electronics.stackexchange.com/questions/466981/fraction-resistance-and-negative-resistance
 
tlfong01
tlfong01
2:57 AM
Now I have found a reference on TD 2BS4A load line analysis and astable design. Any comments? tunneldiode.blogspot.com/2020/12/…
 
 
1 hour later…
tlfong01
tlfong01
4:22 AM
About my tunnel diode blog - I am suing the free Google blog service called "Blogger". You can see that I have a couple of other old, out of dated Blogger blogs, mainly on Rpi experiments. These couple of years I am using rpi.org/blog. It is good for projects: Relay Module KY-019 5V - tlfong01, www.raspberrypi.org/forums/projects/automation,sensing, and robotics
https://www.raspberrypi.org/forums/viewtopic.php?f=37&t=77158#p1323061. The good thing of this kind of project blogs is (1) You can start a project, or just exploring something, say, I did not know anything about relay, so I joi…
 
 
9 hours later…
Circuit fantasist
Circuit fantasist
1:45 PM
Hi TL Fong, Today I had very little time and I could only look at some of your links ...
I have a lot to write to you but the time difference prevents me from doing it on time...
 
tlfong01
tlfong01
2:24 PM
No worries. Nothing urgent actually. Take you time. I am right now trying to set up my new Raspberry Pi (CM4) It might take me at least one hobbyist week to complete. I am also programming the DAC PCA8951 to do a DC sweep to power the tunnel diode, it might also take me another hobbyist week. So just wait till you have more time to comment on my posts. Have a nice day. Cheers.
 
 
2 hours later…
Circuit fantasist
Circuit fantasist
4:26 PM
Interesting observations on the behavior of the "elite" ... I also observe how certain groups consolidate against the "common enemy" and help each other ... All this is unworthy and insulting because we are here led by good will ...
 
Circuit fantasist
Circuit fantasist
4:52 PM
This started to make me nervous and I am already thinking about what I can change. I realize that you have to have something of your own so that you don't feel like a "guest" in a foreign place.
I have a site since 2002 (circuit-fantasia com) but I no longer want to keep it at a low level (html). I am looking for a simple form to publish my ideas. Wikibooks is a rather cumbersome publishing system and has no feedback from readers. Discussions in ResearchGate are weak. Question&Answer sites like this one allow some awful people to make fun of you in all sorts of ways. The new site has restrictions ...
 
 
2 hours later…
Circuit fantasist
Circuit fantasist
6:41 PM
Your blog caught my attention as another possible form of publication. But the organization is not very clear to me. Can individual publications be followed only chronologically? Or does this apply to posts inside? Maybe I should try ...
 

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