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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube-number record

4018-BB

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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

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Normal350 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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