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Old 25th March 2012, 02:11 AM   #111
AJT is offline AJT  Philippines
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Quote:
Originally Posted by popilin View Post
In my childhood I read how to increase the gain of a small signal triode reducing the filament voltage.
How to explain this in a not fanciful way?
Or will that in this hemisphere the laws of physics are reversed, or the books are written the other way around? Or am I reading the wrong books?
perhaps you mean this? DHT with starved filaments.
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Old 25th March 2012, 04:21 AM   #112
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Originally Posted by avp1 View Post
Actually for natural sound like frogs, surround is much better. It also has an advantage in reducing influence of room acoustic on resulting sound.
Thank you Mr. Theoretician, I will follow your advice!

Which surround sound processing would you recommend for particular frogs?
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Old 25th March 2012, 05:39 AM   #113
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Originally Posted by SY View Post
You see correctly. Morgan gave me two of them to duplicate his test setup. Before I wired things up, I stuck a D3a into mine (CCS plate load, LED bias) to check its distortion spectrum, just for fun. I thought my test equipment was broken! I asked him if he had measured them before doing his 6SN7 work. He responded, no. I suggested that he had put the wrong tube on the bottom of his mu follower.
Hey Sy,
That is an excellent tale, thanks for sharing. The process and fellowship is half the fun!
DT
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Old 25th March 2012, 03:10 PM   #114
popilin is offline popilin  Argentina
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Quote:
Originally Posted by Tony View Post
perhaps you mean this? DHT with starved filaments.
If memory works was a Loftin-White amp and valve was a 12AX7, but in a DHT the effect is almost the same.
Is this the not fanciful explanation? The deepest nature of triode?
Can be described in two words.
I am speaking of the same in the whole thread, but as I said before, it seems, in this hemisphere the laws of physics are reversed or people from the other hemisphere does not see what is happening in this, perhaps for some unknown relativistic effect.

What's in a triode addition to the interactions of electrons?
electron-electron, electron-electrodes, electron-fields
Am I missing something?, Cosmic rays?, Gravitation?, The wave-like nature of electron?, Virtual particles?

How can it be denied that the electron cloud decreases the gain of the triode?
The starved filament operation reduced thermionic emission, then the electron cloud decreases, then increases the gain of the triode.
Is this fanciful?

How can it be denied that secondary emission also reduce the gain of the triode?
No need 1MeV to have secondary emission, around 4ev is sufficient.
The electrons emitted by the anode can be absorbed again, because the anode is positive, but have less energy, part of it is dissipated as heat, as result, the gain of the triode decreases.
Is this fanciful?
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Old 25th March 2012, 04:19 PM   #115
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No fantasy is required, a healthy dose of vanity is shown by some, and to some extent they are correct. It has all been done before. The theory and mathematics is all in the musty old books.
One thing for sure is that you cannot see that electron cloud or hold it in your hand.
DT
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Old 25th March 2012, 04:55 PM   #116
popilin is offline popilin  Argentina
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Hi DualTriode
Thanks for your feedback.I hope not me vain.
Of course they are right, but do not own the truth, almost from the beginning, when I say the same in a different way, I am fiercely attacked.
It is also true that it has all been done before, and the theory and mathematics is all in old books, but seem to forget.
It is also true that we can't see that electron cloud or hold in our hand, neither distortion, but we can talk about it.
I've said before, my knowledge is limited, and do what I can, after all I'm just a TV repairman.
Best regards
Johann
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Old 25th March 2012, 11:14 PM   #117
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johann, just go out there and build yourself a triode preamp.....this is what you wanted to do, yes? there are lots of data in those databooks that you can use......
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Old 25th March 2012, 11:23 PM   #118
Bigun is offline Bigun  Canada
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Quote:
Originally Posted by popilin View Post
What do you suggest that I leave?
Tobacco, alcohol, women...
Well I'll quote one of England's most famous footballers, George Best on this one: "I spent a lot of money on women, drink and fast cars, the rest I just squandered"
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Old 25th March 2012, 11:58 PM   #119
popilin is offline popilin  Argentina
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Hi Bigun
Good to see you here, I'm still laughing, very good quote!
The paper that you told me I had read time ago, is very good, I didn't know it was Wavebourn.
I appreciate your response, these are the contributions that make me feel among friends.
Best regards
Johann
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Old 26th March 2012, 12:44 AM   #120
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Originally Posted by popilin View Post
The paper that you told me I had read time ago, is very good, I didn't know it was Wavebourn.
Me neither.
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