Tube-number record
A28-13W
0 archive entries
A28-13W is a tube type in the TubeDatabase archive (class: Television Picture Tube). Recorded specifications: brand TELEFUNKEN, construction Display / CRT, base Glass, socket Miniature 7-pin (B7G), and maximum plate voltage 12000 V. The archive does not yet hold a photographed example of this type.
BrandTELEFUNKEN
ClassTelevision Picture Tube
BaseMiniature 7-pin (B7G)
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialGlass
Sections1
Filament / Heater
Heater Notes0.75 W filament power, indirectly heated
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical TV Operation | 10000 V | — | — | — | — |
Application Notes
The tube requires a black coating thickness sufficient to meet the 100 Ohm resistance requirement. Focusing voltage is typically -50 to +250 V at an anode current of 0.25 mA.
Datasheets
Datasheet: A28-13W.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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