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

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Tube-number record

CRM 71

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BrandMazda
ClassCathode Ray Tube
BaseOctal
Filament2 V @ 1400 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Sections1

Filament / Heater

Absolute Maximum Ratings

Plate Voltage4000 V

Audio Performance

Key Features
  • Magnetically focussed
  • Magnetically deflected
  • 7-inch screen
  • Substantially black and white picture

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Operation3500 V————

Application Notes

Recommended anode voltage of 3,500V. Protective resistance of 25,000 ohms required between anode and H.T. supply. Heater supply should be provided by a separate winding. Tube should be handled with care to avoid implosion; safety glass and goggles recommended during handling.

Datasheets

Datasheet: CRM71.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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