Thyratron
The NL716 / 6855 / 716 Tube is a compact, quick heating
Thyratron designed for timing and control applications.
It is gas and mercury filled for quick starting and wide
temperature limits. It has long life without circuit
cushioning.
Electrical Data:
Heater Voltage .................... 2.5 V
Heater Current .................... 0.8 A