Specialized - Switching Tube ·Thyratron
Cold-cathode trigger tube for welding timers, relay and counting circuits, and power switching. Heaterless gas discharge provides rapid control.
Cold-cathode trigger tube for welding timers, relay and counting circuits, and power switching.
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Cold-cathode gas-filled trigger tube for relay/control service.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
AnodeIgnitionVoltage
255 V
StarterVoltage=0V
StarterIgnitionVoltageMinimum
73 V
StarterIgnitionVoltageMaximum
93 V
MaintainingVoltage
70 V
AnodeCurrent=25mA
Data set 02
Published operating points and test conditions from this source.
AC supply voltage
117 V RMS
Maximum average cathode current
- to 25 mA
Tav<=15s
Anode ignition voltage at starter 0 V
255 V
Starter ignition voltage
73 to 93 V
Anode burning voltage at 25 mA
70 V
Starter burning voltage
60 V