7D7
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BrandSylvania
ClassHeptode-Triode Converter
BaseLoktal
Filament7V @ 160mA
Construction
Primary TypeHeptode-Triode
EnvelopeT-9
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage100 V
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Mixer (Hexode) | 250V | 275 | 1500000 | - | 1.3mA |
| Triode Section | 150V | - | - | 17.5 | 10.5mA |
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