Tube-number record
4050-BB
0 archive entries
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
Audio Performance
Key Features
- Blue spot for photographic work (4050-BB)
- Long afterglow (4050-BD)
- Green spot for visual work (4050-BG)
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.
0 results