Tube-number record
DB 7-4
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DB 7-4 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand Philips, construction Display / CRT, socket Special / none, and maximum plate voltage 1000 V. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassCathode Ray Tube
BaseSpecial / none
Filament6.3 V @ 400 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle gun
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1000 V
Grid 2 Voltage400 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Oscillography | 800 V | — | — | — | — |
Application Notes
D2' has to be connected to a2 (asymmetric deflection).
Datasheets
Datasheet: DB7-4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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