U.U.9
0 Tubes in archive
BrandMazda
ClassFull Wave Rectifier
BaseB8A
Filament6.3V @ 630mA
Construction
Primary TypeIndirectly heated
Rectifier TypeFull Wave
EnvelopeGlass
Base MaterialB8A
Sections2
Filament / Heater
Heater NotesIndirectly heated — for parallel operation
Absolute Maximum Ratings
Plate Voltage350 V
Cathode Current90 mA
H-C Voltage300 V
Audio Performance
Key Features
- Indirectly heated
- Parallel operation
- Clear bulb
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Full Wave Rectifier | 300V | - | - | - | 60mA |
| Full Wave Rectifier | 350V | - | - | - | 60mA |
| Full Wave Rectifier | 300V | - | - | - | 80mA |
| Full Wave Rectifier | 350V | - | - | - | 90mA |
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