L.22/DD
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BrandMazda
ClassBattery Double Diode Triode
BaseBritish Octal
Construction
Primary TypeTriode
EnvelopeGlass
SectionsDouble Diode Triode
Filament / Heater
Absolute Maximum Ratings
Plate Voltage150 V
Audio Performance
Key Features
- Battery operated
- Metallised bulb
- British Octal Base
- Double diode triode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rating Conditions (Va=100, Vg=0) | 100V | 1850 | 10000 | 18.5 | - |
| Resistance Coupled (Anode Load 75,000 ohms) | 120V | - | - | - | 0.6mA |
| Resistance Coupled (Anode Load 50,000 ohms) | 120V | - | - | - | 0.8mA |
Application Notes
The valve is recommended for detection, automatic volume control and audio frequency amplification. Diode load resistance should not be less than 0.5 megohm. Pin No. 1 should be connected to the negative terminal of the L.T. battery.
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