Talk:Triode

message: I am afraid that most filaments require a two wire connection to allow current to flow through them to cause heating. The filament heater is sometimes separate and sometimes electricaly isolated from the cathode. So a triode may require 4 or 5 leads. I think leaving this out may confuse some. 
Perhaps someday more about their history could be added. I believe this invention is attributed to Lee DeForest and that triodes were originally called audions. I also think there was some confusion about the importance of vacuum. I think the issue was resolved with the introduction of the "getter".
See Vacuum tube, we don't need to duplicate this information. In fact it might be good to merge this page with that. --Mystic Pixel 07:21, 9 April 2006 (UTC)

message: I doubt that the British call a VACUUM tube a GAS FILLED tube. One has gas, the other cannot.Thortful 07:25, 10 Nov 2004 (UTC)
thread_title:  Gas-filled? 

message: De Forest thought some gas was necessary to make the Audion work, and this is in his patent. In fact they worked in spite of the gas not because of it. De Forest wasn't worried about the physics except where his patent was affected.  PAS 02:46, 18 August 2006 (UTC)
thread_title:  De Forest's patent 

message: I know that the triode and the transistor are worlds apart as far as how each works internally. However, can one theoretically replace the other if the transistor is a high power consumption transistor?
They're different in implementation, but not in theory, as far as internal workings. I'm not sure what you're trying to get at (as transistors are normally used to replace triodes, not the other way around) but the answer is quite simple: use a high-power triode. See the Vacuum tube page, where it talks about high-power tubes. --Mystic Pixel 07:21, 9 April 2006 (UTC)
thread_title:  Workings same as transistor? 

message: Don't Join Pages It Helped Me alot!
:I removed the merge tag. I think the page could eventually have a discussion of triode circuits, etc. Give me some time and I'll get around to some expansion. - mako 21:40, 2 May 2006 (UTC)
replies: text: OK, I see your point. Fair enough. Mystic Pixel 00:33, 19 May 2006 (UTC)
thread_title:  No 

message: This is a rather barmy assertion. All amplifiers use negative feedback to compensate the non-linearities of their amplifying elements. From what I gather, valve amps produce a "warmer" sound because they saturate more gracefully outside their linear range. Transistor amps tend to cut out abruptly outside the linear range, resulting in a harsher sound. (This is discussed a bit in Valve sound).
If people are claiming that valve amps are more linear, then they're wrong. I'm going to delete this statement unless someone can back it up with a reference. -- Sakurambo 桜ん坊 18:36, 11 July 2006 (UTC)
thread_title:  ... triodes are still more linear at audio-frequency ranges... 

message: We could do with a diagram of typical triode electrical characteristic curves.--Light current 19:31, 1 January 2007 (UTC)
thread_title:  Characteristics 

message: A lecturer at MIT talks about a MOSFET getting into its "triode region" (the oppose of saturation), e.g. in relation to small signal analysis. What's a triode region? And what's it got to do with triodes? —Pengo 08:28, 27 August 2007 (UTC)
thread_title:  Triode region? 

message: The first sentence is:
The directly-heated cathode (or indirectly by means of a filament) produces an electron charge by thermionic emission when AC is applied.
It would be better to say that the cathode emits electrons by thermionic emission and leave out the mention of AC in this first statement as the introduction of the superimposed AC signal is clearly expressed later in the paragraph.184.45.71.182 (talk) 12:15, 10 May 2012 (UTC)
thread_title:  Operation section can be improved. 

message: I have changed this on the caption to the picture, because although it was indeed very popular in the 1960s, it was quite rare in TV sets and radios, although occasionally found in stereo radiograms and such like. It was also used briefly in professional audio equipment, before that went solid-state, and is still used in the bogus "high end" audio market. The double triodes found in TV sets were commonly as a cascode in the VHF tuner, ECC84 or ECC85. Single triodes, with pentode, were more common in radios and TV sets. ECC83 is equivalent to 12AX7. Feel free to change or add, if you know more, of course.
 Tiger99 (talk) 14:52, 27 August 2014 (UTC)
thread_title:  ECC83 Usage 

message: The article says: current through the tube from cathode to anode.  However, current it, by definition, positive so current is anode to cathode.  Electron flow is cathode to anode. Gah4 (talk) 18:22, 12 August 2020 (UTC)
replies: text: Thanks for catching that!  I corrected it.  --ChetvornoTALK 00:21, 14 August 2020 (UTC)
thread_title:  ''current through the tube from cathode to anode''