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New rebuild - 6F12P-6P45S Triode
New rebuild - 6F12P-6P45S Triode
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Old 21st February 2019, 02:29 AM   #51
kodabmx is offline kodabmx  Canada
Affordable triode connected sweep tube amps.
diyAudio Member
 
Join Date: Oct 2011
Location: Toronto
New rebuild - 6F12P-6P45S Triode
So far so good. Still testing though...
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Old 1st March 2019, 01:42 PM   #52
hendrixgr is offline hendrixgr
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Join Date: Apr 2018
Hi.
How much power they produce and at what anode voltage in triode mode?
I know that in tetrode mode they work fine but the OPT must be about 1.6K anode to anode if i am right.
I just got 10 for 40 dollars and some sockets to use in place of the 829B just for fun!
Chris

Last edited by hendrixgr; 1st March 2019 at 01:47 PM.
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Old 1st March 2019, 01:48 PM   #53
kodabmx is offline kodabmx  Canada
Affordable triode connected sweep tube amps.
diyAudio Member
 
Join Date: Oct 2011
Location: Toronto
New rebuild - 6F12P-6P45S Triode
I'm using 350V, 80ma, 2k2 Ra-a. Calculations say they make about 40W.
The 6P45S was running 320V @ 120ma, They were good for 60W, but if you drop the load to 1k3 Ra-a, they make ~ 100W.
Alternatively, if you use 5k5 Ra-a, you make a ~25W class A amp.
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Old 1st March 2019, 04:32 PM   #54
hendrixgr is offline hendrixgr
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Join Date: Apr 2018
That is very encouraging information, thank you!
Chris
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Old 1st March 2019, 06:49 PM   #55
kodabmx is offline kodabmx  Canada
Affordable triode connected sweep tube amps.
diyAudio Member
 
Join Date: Oct 2011
Location: Toronto
New rebuild - 6F12P-6P45S Triode
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