GS-13 mounting
It is a very simple way to have cooler to all small ceramic russian tubes.
As cooler I use mainly the copper of a dual layer board and additional tin to the anode with a 12V PC fan at 6.3V(very silent).
Without cooler it is not possible to use them full power.
Theese tubes are very strong made and survive soldering. But it must be done carefully and slowly not to overheat.
Testing without fan they overheat and melt the solder. Even after that they continue working.
The latest test with 4PSE GS13 audio amp works for hours without any issue at 120ma 245V.
GS-13 is 13W disipation and at 120ma (the four) is about 30W disipation. Way under the limit of 52W.
To this amp I use 6S53N as driver(at 60V) with the same cooling system.
I do not expected to play so good. You can watch it here --
YouTube
Any comments are welcommed
regards
Dimitrios