Tube-number record
CRM 91
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CRM 91 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand Mazda, construction Display / CRT, socket Octal, and maximum plate voltage 6000 V. The archive does not yet hold a photographed example of this type.
BrandMazda
ClassCathode Ray Tube
BaseOctal
Filament2 V @ 1400 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesHeater supply should be provided by a separate winding connected to the cathode.
Absolute Maximum Ratings
Plate Voltage6000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Television Picture Reproduction | 5000 V | — | — | — | 0.15 mA |
Application Notes
Recommended anode voltage of 5,000V. A protective resistance of 25,000 ohms should be connected between the anode terminal and H.T. supply. Scanning power is proportional to anode voltage. Avoid mean anode voltage less than 4,500V for screen color considerations.
Datasheets
Datasheet: CRM91.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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