Tube-number record
COLD CATHODE THYRATRON
0 archive entries
COLD CATHODE THYRATRON is a tube type in the TubeDatabase archive (class: Trigger Tube). Recorded specifications: brand Tung-Sol, year 1960, construction Other / special, and maximum plate voltage 140 V. The archive does not yet hold a photographed example of this type.
BrandTung-Sol
ClassTrigger Tube
Construction
Primary TypeOther / special
EnvelopeGlass Bulb
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage140 V
Grid 1 Voltage87 V
Cathode Current35 mA
Audio Performance
Key Features
- Small size
- Light weight
- No filament power required
- Neon glow visual indication
- Radioactively dosed to minimize delay
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Relay Service | 130 V | — | 6800 | — | — |
Application Notes
Used primarily in relay service, trigger tubes, relaxation oscillators, and voltage regulators. Can fire directly from vacuum photo tubes or cadmium sulfide photo cells. Conductance is indicated by a characteristic neon glow on the cathode surface.
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