6M5
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BrandMiniwatt
ClassPower Pentode
BaseSmall-button Noval 9-pin
Filament6.3V @ 0.7mA
Construction
Primary TypePentode
EnvelopeT6-1/2
SectionsSingle
Filament / Heater
Heater NotesValues standard for 6M5/EL80 series
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation9 W
Grid 2 Voltage400 V
Grid 1 Voltage-1.3 V
Cathode Current55 mA
H-C Voltage100 V
Audio Performance
Typical THD10%
Power Output3.9 W
Key Features
- Power Pentode
- Noval 9-pin base
- High transconductance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A (Single Valve) - Condition 1 | 150V | - | - | - | 20mA |
| Class A (Single Valve) - Condition 2 | 200V | - | - | - | 30mA |
| Class A (Single Valve) - Condition 3 | 250V | 10000 | 40000 | 22 | 36mA |
| Class AB (Two Valves) | 250V | - | - | - | 79mA |
| Class A (Triode Connected) | 250V | - | - | - | 33mA |
Application Notes
Commonly used as audio power amplifier in Class A or AB operations.
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