Tube-number record
COLD CATHODE TRIGGER TUBE
0 archive entries
COLD CATHODE TRIGGER TUBE is a tube type in the TubeDatabase archive (class: Trigger Tube). Recorded specifications: brand SYLVANIA, construction Other / special, socket Flexible / flying leads, maximum plate voltage 1000 V, and maximum plate dissipation 0.125 W. The archive does not yet hold a photographed example of this type.
BrandSYLVANIA
ClassTrigger Tube
BaseFlexible / flying leads
Construction
Primary TypeOther / special
EnvelopeT5 3/4
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1000 V
Plate Dissipation0.125 W
Cathode Current500000 mA
Audio Performance
Key Features
- Ruggedized design
- Inert-gas filled
- Flexible lead wires
- High instantaneous peak currents
- Internal keep-alive grid
- Increased trigger sensitivity
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pulse Operation | 500 V | — | — | — | 60000 mA |
Application Notes
Designed for electronic relay and switching service involving extremely high instantaneous peak currents. Can be triggered directly from a phototube without intervening amplifiers. Circuit values should insure at least 10 amperes minimum peak current flow.
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