Tube-number record
MW 31-15
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MW 31-15 is a tube type in the TubeDatabase archive (class: Television Tube (CRT)). Recorded specifications: brand Miniwatt-Dario, construction Display / CRT, socket Duodecal, and maximum plate voltage 11000 V. The archive does not yet hold a photographed example of this type.
BrandMiniwatt-Dario
ClassTelevision Tube (CRT)
BaseDuodecal
Filament6.3 V @ 0.3 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated; when series-fed, voltage must not exceed 8.5V during startup.
Absolute Maximum Ratings
Plate Voltage11000 V
Grid 2 Voltage470 V
Grid 1 Voltage-200 V
H-C Voltage150 V
Audio Performance
Key Features
- Ion trap (piège à ions)
- Permanent magnet ion trap
- Electromagnetic concentration
- Electromagnetic deflection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 8000 V | — | — | — | — |
Application Notes
The ion trap magnet position should be adjusted for maximum light output on the screen. The magnet arrow must point towards the anode terminal (a2). A NTC resistor is recommended for series filament chains.
Datasheets
Datasheet: MW31-15.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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