Tube-number record
4018-BB
0 archive entries
4018-BB is a tube type in the TubeDatabase archive (class: Gas Filled Cathode Ray Tube). Recorded specifications: brand Standard, construction Display / CRT, and maximum plate voltage 2000 V. The archive does not yet hold a photographed example of this type.
BrandStandard
ClassGas Filled Cathode Ray Tube
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsGas Filled
Filament / Heater
Absolute Maximum Ratings
Plate Voltage2000 V
Audio Performance
Key Features
- Blue spot for photographic work (4018-BB)
- Long afterglow of 10-15 seconds (4018-BD)
- Green spot for visual work (4018-BG)
- x plates nearest to screen
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal | 350 V | — | — | — | — |
Application Notes
A 2,000 ohm protective resistance should be included in the shield circuit as well as in the anode circuit. In the 4018-BB, -BD, -BG valves one plate of each pair of deflecting plates is connected to the anode.
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