CV225 air cooled triode
This valve is based on the ACT17.
(a) The exact value of the filament voltage shall be marked on the valve
(b) With air cooling including an air blast to the filament seals
(c) Grid current to be distributed equally over the four leads
The connections are as follows: there are three longer and four shorter pins. The two longer pins either side of two shorter ones are the filament. The third longer pin is the filament centre tap. All four shorter pins are strapped together and are the grid connector. The anode is the main copper body.
This file was last modified23:10:21, Wednesday February 23, 2022