Tube-number record
A 49-220 X
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A 49-220 X is a tube type in the TubeDatabase archive (class: Color Television Picture Tube). Recorded specifications: brand MAZDA BELVU, construction Shadow-Mask (masque perforé), socket CRT base (B12 family), and maximum plate voltage 27500 V. The archive does not yet hold a photographed example of this type.
BrandMAZDA BELVU
ClassColor Television Picture Tube
BaseCRT base (B12 family)
Filament6.3 V @ 900 mA
Construction
Primary TypeShadow-Mask (masque perforé)
EnvelopeGlass, 90° deflection
SectionsTriple (3 electron guns)
Filament / Heater
Heater NotesFilaments connected in series
Absolute Maximum Ratings
Plate Voltage27500 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Example | 25000 V | — | — | — | — |
Application Notes
Recommended heater voltage regulation at 6.3V for maximum cathode life. Horizontal mounting position recommended.
Datasheets
Datasheet: A49-220X.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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