Tube-number record
7BGP-
0 archive entries
7BGP- is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand Du Mont, construction Display / CRT, base Medium Shell Diheptal 14-pin, socket CRT / special base, maximum plate voltage 2000 V, and maximum plate dissipation 6 W. The archive does not yet hold a photographed example of this type.
BrandDu Mont
ClassCathode-Ray Tube
BaseCRT / special base
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
Envelope7-inch, flat face clear glass
Base MaterialMedium Shell Diheptal 14-pin
SectionsSingle beam
Filament / Heater
Heater NotesHeater current 0.6A +/- 10%
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 (Eb2=2000V) | 1000 V | — | — | — | 0.0035 mA |
| Condition 2 (Eb2=4000V) | 1000 V | — | — | — | 0.0105 mA |
Application Notes
Recommended that deflecting-electrode circuit resistances be approximately equal. Maximum grid No. 1 circuit resistance is 1.5 Megohms.
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