VARIABLE-MU SCREENED PENTODE
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BrandMazda
ClassH.F. Pentode
BaseBritish Octal
Filament4V @ 650mA
Construction
Primary TypePentode
EnvelopeMetallised glass
SectionsSingle
Filament / Heater
Heater NotesNon-inductive heater
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage250 V
Audio Performance
Typical THD5%
Key Features
- Variable-mu characteristic
- Non-inductive heater
- Small dimensions bulb
- Metallised bulb
- Large signal handling capacity
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Zero Bias | 250V | 3000 | - | - | - |
| Condition 1 | 250V | 2000 | 1300000 | - | 7.7mA |
| Condition 2 | 250V | 2000 | 1200000 | - | 8.6mA |
Application Notes
Particularly suitable for use in the H.F. stage of television receivers. Designed for use in A.C. Mains receivers. Modulation hum eliminated due to non-inductive heater.
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