Tube-number record
4018-AB
0 archive entries
4018-AB is a tube type in the TubeDatabase archive (class: Gas Filled Cathode Ray Tube). Recorded specifications: brand Standard Valves, construction Display / CRT, and maximum plate voltage 2000 V. The archive does not yet hold a photographed example of this type.
BrandStandard Valves
ClassGas Filled Cathode Ray Tube
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage2000 V
Grid 1 Voltage50 V
Audio Performance
Key Features
- Gas filled
- Blue spot for photographic work (AB version)
- Long afterglow screen (AD version)
- Green spot for visual work (AG version)
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal Operation | 350 V | — | — | — | — |
Application Notes
A 2,000 ohm protective resistance should be included in the shield circuit as well as in the anode circuit. The x plates are those nearest to the screen.
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