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Old 9th October 2012, 08:26 AM   #51
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Which one is ...
which one is what....
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Old 9th October 2012, 08:43 AM   #52
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Was planning to write "correct" or "better"
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Old 12th October 2012, 06:56 PM   #53
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My cat (Rudy) is checking the progress.
Click the image to open in full size.
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Old 12th October 2012, 07:30 PM   #54
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Was planning to write "correct" or "better"
I dont know, but when you have located the grid(signal in), isnt the two other always crossing each other, so to speak
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Old 12th October 2012, 07:41 PM   #55
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They are between g1 and a. But there is the question of how each of them interacts with electron flow while differently biased. I don't know. Staying with "classical" i.e. g3-k, g2-a.
After some power test I may be tempted to change.

Last edited by yagoolar; 12th October 2012 at 07:48 PM. Reason: Second thought
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Old 12th October 2012, 08:08 PM   #56
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thought you had it triode coupled ?

but I seen the size/value of resistor to anode debated a lot
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Old 12th October 2012, 08:24 PM   #57
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Triode-connected. Yes. Resistor between anode and grid stops RFI
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Old 12th October 2012, 09:25 PM   #58
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btw, DHT Rob have a schematic with C3g-50 amp on his site

seems he connects g2 and g3 together, and then to anode with 100R
is it different because of the IT
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Old 13th October 2012, 08:47 AM   #59
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btw, DHT Rob have a schematic with C3g-50 amp on his site

seems he connects g2 and g3 together, and then to anode with 100R
is it different because of the IT
I haven't found any measurements of triode connected pentodes with both g2 and g3 connected to anode. At another forum I have found a sound description of C3g with g2 connected to plate and cathode respectively. That is of personal taste, however.

IMHO, IT use does not imply connection presented in DHT Rob's schematic.
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Old 13th October 2012, 05:48 PM   #60
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Datasheet reads U3=0V i.e. connected to cathode.
http://www.4tubes.com/DATASHEETS/SCA...-C/C3g-TFK.pdf
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