Tube-number record
V.312
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BrandMazda
ClassA.C. Mains Triode
Base5-pin
Filament4 V @ 650 mA
Construction
Primary TypeTriode
EnvelopeMetallised
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Audio Performance
Key Features
- Indirectly heated
- Low hum level
- Low valve noise
- Metallised bulb
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rating | 100 V | 2500 | 12000 | 30 | — |
| Typical Operation 1 | 150 V | 2000 | — | — | 3 mA |
| Typical Operation 2 | 150 V | 1600 | — | — | 2 mA |
Application Notes
The V.312 is specially intended for use in microphone amplifiers and similar applications where low hum level and valve noise are required. May be used as a low-frequency amplifier with either transformer, choke or resistance-capacity coupling. Anode resistance of 50,000 to 100,000 ohms suitable for RC coupling.
Datasheets
Datasheet: V312.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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