Tube-number record
C12FM
0 archive entries
C12FM is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand Brimar, construction Tetrode, socket Duodecal, and maximum plate voltage 9000 V. The archive does not yet hold a photographed example of this type.
BrandBrimar
ClassCathode Ray Tube
BaseDuodecal
Filament6.3 V @ 0.3 mA
Construction
Primary TypeTetrode
EnvelopeMagnetic Teletube
SectionsSingle
Filament / Heater
Heater NotesUnder series operated conditions the maximum heater voltage must not exceed 7.5 volts RMS.
Absolute Maximum Ratings
Plate Voltage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Operating Characteristics | 7000 V | — | — | — | — |
Application Notes
The magnet should be located on the neck with the arrow pointing towards the screen and along the line marked on the neck. Adjust for optimum brightness.
Datasheets
Datasheet: C12FM.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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