Tube-number record
9NP1
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9NP1 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand Research Enterprises, Ltd., construction Electrostatic Focus and Deflection, base Bakelite, socket 6-pin, and maximum plate voltage 5500 V. The archive does not yet hold a photographed example of this type.
BrandResearch Enterprises, Ltd.
ClassCathode Ray Tube
Base6-pin
Filament2.5 V @ 2100 mA
Construction
Primary TypeElectrostatic Focus and Deflection
EnvelopeJ7202
Base MaterialBakelite
SectionsSingle gun monochrome
Filament / Heater
Heater NotesHeater current: 2.1 A +/- 15%
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | — | — | — | — | — |
Application Notes
Anode #2 voltage should not be less than 3000 volts for adequate brilliance and definition. Cathode should be connected to the mid-point or one side of the heater supply.
Datasheets
Datasheet: 9NP1.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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