Tube-number record
B30 M1
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BrandVEB Werk für Fernmeldewesen
ClassBildröhre (Picture Tube)
BaseOctal
Filament6.3 V @ 500 mA
Construction
Primary TypeOther / special
EnvelopeGlass
Base MaterialGlass
SectionsSingle
Filament / Heater
MaterialIndirectly heated
Warm-up Time60s
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage12000 V
Grid 2 Voltage500 V
Grid 1 Voltage-150 V
Cathode Current0.035 mA
H-C Voltage125 V
Audio Performance
Key Features
- Ion trap (Ionenfalle)
- Direct viewing TV tube
- All-glass construction
- Electromagnetic focusing and deflection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Television Receiver | 10000 V | — | — | — | 0.03 mA |
Application Notes
Observe power-on sequence: Heater voltage first, then Anode voltage. Power-off: Anode voltage first, then Heater. Max bulb temperature 80°C.
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