• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Help: Interstage Transformer for 7788 (E810F) Tube in Triode ?

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tcqanh

Member
Joined 2011
cotdt said:
D3a to 45 sounds soooo good. The datasheet for 45 says plate dissipation is 12W (some say 10W), but I run mine at 12.8W. Usually people run the 45 at 6-7W dissipation which is where the 1.6W figure for 45 comes from.
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Nice information :) . 1.6W is so weak to get something :D

Looking at 45's plate shape, it is nearly one half of 6b4G or 2A3 which have 15W max. I used to run 2A3 in 17w in longtime, it's ok.

what brand are your 45 tube ? how long have you ran this 45 amp ?

May I see your schema, if you don't bother ?
 
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cotdt

Member
Joined 2005
I have over 30 NOS 45's... I don't know how long they would last at my settings, but I have so many I don't care. 4 months so far on this pair (1930's globes) and still going strong.

I run my RCA 2A3's at 25W plate dissipation driven by 6P45P. I don't know how long these would last, but they sound amazing.
 
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