10.LD.3
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BrandMAZDA
ClassDOUBLE DIODE TRIODE
BaseB.8.A
Filament14V @ 200mA
Construction
Primary TypeDouble Diode Triode
Rectifier TypeSignal Diode
EnvelopeClear
Base MaterialGlass
SectionsTriode section and two diode sections
Filament / Heater
Heater NotesIndirectly heated—for series operation
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1 W
Cathode Current5 mA
H-C Voltage160 V
Audio Performance
Typical THD5%
Key Features
- Indirectly heated
- Series operation
- Double diode triode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Characteristics | 100V | 1400 | 50000 | 70 | - |
| Resistance Coupled Amplifier (1) | 150V | - | - | 44 | 0.32mA |
| Resistance Coupled Amplifier (2) | 150V | - | - | 40 | 0.85mA |
Application Notes
It is recommended that Diode 2 should be used for detection. Pin 1 should be connected to the earthy end of the heater chain.
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