The power supply is from 2005. By my standards that's not very old, but maybe because I've also been looking at power supplies from the 1940s :-) Specifically a

The power supply is from 2005. By my standards that's not very old, but maybe because I've also been looking at power supplies from the 1940s :-) Specifically a 100-pound Teletype power supply from the Navy that used mercury-vapor thyratron tubes. http://www.righto.com/2018/09/glowing-mercury-thyratrons-inside-1940s.html http://www.righto.com/2018/09/glowing-mercury-thyratrons-ins...