• 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.

Tube socket center post


2003-09-01 8:35 am
I have noticed that some tube sockets have a center post. Since this is not connected to anything on the tube itself, what is this post used for. I suppose that it goes to ground, but what does it do?


  • socket.png
    185.4 KB · Views: 88