Tube-number record
30E7
0 archive entries
30E7 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand Mazda, construction Display / CRT, socket CRT base (B12 family), and maximum plate voltage 4000 V. The archive does not yet hold a photographed example of this type.
BrandMazda
ClassCathode Ray Tube
BaseCRT base (B12 family)
Filament4 V @ 720 mA
Construction
Primary TypeDisplay / CRT
Envelope12 inch Diameter
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage4000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical focusing | 2200 V | — | — | — | — |
Application Notes
Precision constructed and calibrated instrument which provides bearings with an error not exceeding 1% at any point on the scale. The scale is graduated to correct for octantal error.
Datasheets
Datasheet: 30E7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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