|
#1
|
||||
|
||||
Vacuum tube - probably a thyratron? I can't imagine the need for a traditional vacuum tube of any sort. 2D21/PL21 tubes were commonly used in controllers in the late 50s/early 60s.
__________________
Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! |
#2
|
||||
|
||||
Quote:
It had 2 cathode pins, with a fusible link connecting them. If the current through the link exceeded 2.25 A, it would open, cutting off the power. |
|
|