19G3
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BrandMazda
ClassHigh Vacuum Half-Wave Rectifier
BaseInternational Octal (IO8)
Filament4V @ 1400mA
Construction
Primary TypeHalf-Wave Rectifier
Rectifier TypeHigh Vacuum
EnvelopeClear Glass Bulb
Base MaterialStandard
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated; Warm-up time 15 seconds before Anode Voltage application.
Absolute Maximum Ratings
Plate Voltage7500 V
Cathode Current375 mA
Audio Performance
Key Features
- Indirectly heated
- High Vacuum
- International Octal Base
- Top Cap Anode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rating 1 (1500 c.p.s.) | 7500V | - | 1800 | - | 75mA |
| Rating 2 (80 c.p.s.) | 7000V | - | 1900 | - | 50mA |
Application Notes
The Heater must be switched on for 15 seconds before the Anode Voltage is applied. Surge limiting resistance may be obtained in the distributed resistance of the transformer. All Maximum Ratings are absolute values.
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