Tube-number record
673
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BrandRCA
ClassHalf-wave Mercury-Vapor Rectifier
Base4-pin
Construction
Primary TypeMercury Vapor
Rectifier TypeHalf-Wave
EnvelopeGlass
Base MaterialMetal
Sections1
Filament / Heater
MaterialCoated
Warm-up Time30s
Absolute Maximum Ratings
Plate Voltage15000 V
Cathode Current2500 mA
Audio Performance
Key Features
- Mercury-Vapor
- Coated Filament
- Bayonet Base
- High Inverse Voltage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| In-Phase Operation (20° to 60° C) | 10000 V | — | — | — | 1750 mA |
| In-Phase Operation (-20° to 50° C) | 15000 V | — | — | — | 1500 mA |
| Quadrature Operation (20° to 60° C) | 10000 V | — | — | — |
Application Notes
Shields and rf filter circuits should be provided if subjected to extraneous high-frequency fields. Operating position must be vertical with base down.
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