Tube-number record
G240/2D
0 archive entries
G240/2D is a tube type in the TubeDatabase archive (class: Cold-Cathode Gas-Filled Triode). Recorded specifications: brand Standard Telephones and Cables Limited, construction Triode, base Metal Shell, socket Octal, and maximum plate voltage 230 V. The archive does not yet hold a photographed example of this type.
BrandStandard Telephones and Cables Limited
ClassCold-Cathode Gas-Filled Triode
BaseOctal
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialMetal Shell
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage230 V
Grid 1 Voltage90 V
Cathode Current30 mA
Audio Performance
Key Features
- Long life cathode
- Non-interchangeability of trigger and cathode electrodes
- Higher power than G150/2D
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Maintaining Voltage | 70 V | — | — | — | 20 mA |
Application Notes
Developed for use in applications where higher power is needed in the anode circuit than obtainable with the G150/2D type.
0 results