Tube-number record
PL 1267 / Z 300T
0 archive entries
PL 1267 / Z 300T is a tube type in the TubeDatabase archive (class: Cold Cathode Trigger Tube). Recorded specifications: brand PHILIPS, construction Other / special, socket Octal, and maximum plate voltage 310 V. The archive does not yet hold a photographed example of this type.
BrandPHILIPS
ClassCold Cathode Trigger Tube
BaseOctal
Construction
Primary TypeOther / special
EnvelopeGlass
Filament / Heater
Absolute Maximum Ratings
Plate Voltage310 V
Cathode Current25 mA
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Trigger Tube Operation | 70 V | — | — | — | 25 mA |
Application Notes
The tube is recommended for operation only with both anode and starter voltage positive. The tube must be exposed to some light. Full sunlight or complete darkness should be avoided.
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