9EN7
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BrandEdiswan Mazda
ClassTriode Pentode
BaseB9A (Noval)
Filament9V @ 0.3mA
Construction
Primary TypeTriode Pentode
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesIndirectly Heated
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.7 W
Grid 2 Voltage175 V
Cathode Current14 mA
H-C Voltage200 V
Audio Performance
Key Features
- Indirectly Heated
- AC/DC Mains Television Receivers
- V.H.F. Frequency Changer
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 170V | 8500 | - | - | 10mA |
| Triode | 100V | 3900 | - | 20 | 6mA |
| Frequency Changer (Pentode section) | 164V | 2300 | - | - | 7.6mA |
Application Notes
Basing arranged to minimize pentode cathode lead inductance effects.
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