Tube-number record
4050-BB
0 archive entries
4050-BB is a tube type in the TubeDatabase archive (class: Gas Filled Cathode Ray Tube). Recorded specifications: brand Standard Telephones and Cables, construction Display / CRT, socket Noval (B9A), and maximum plate voltage 2000 V. The archive does not yet hold a photographed example of this type.
BrandStandard Telephones and Cables
ClassGas Filled Cathode Ray Tube
BaseNoval (B9A)
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage2000 V
Grid 1 Voltage50 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal | 350 V | 1 | — | — | — |
Application Notes
A 2,000 ohm protective resistance should be included in the shield circuit as well as in the anode circuit.
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