6F25
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BrandEdiswan Mazda
ClassScreened Variable Mu H.F. Pentode
BaseNoval (B9A)
Filament6.3V @ 300mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated—for series or parallel operation
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation2.5 W
Grid 2 Voltage250 V
H-C Voltage150 V
Audio Performance
Key Features
- Frame Grid construction
- Variable-mu
- Capable of handling large input signals without cross-modulation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| H.F. Pentode | 170V | 12500 | - | 35 | 11.5mA |
Application Notes
Very suitable for use as the common I.F. amplifier in AC or AC/DC television receivers.
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