GR4G
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ClassCold-Cathode Fraction Register Tube
BaseCRT / special base
Construction
Primary TypeOther / special
EnvelopeSide Viewing
Sections4-character
Filament / Heater
Absolute Maximum Ratings
Plate Voltage200 V
Cathode Current7 mA
Audio Performance
Key Features
- Digitron
- 4 Character Side Viewing
- Cold-Cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| D.C. operation | 250V | - | 12000 | - | 5mA |
| A.C. operation (Low Voltage) | 210V | - | 12000 | - | - |
| A.C. operation (High Voltage) | 235V | - | 18000 | - | - |
Application Notes
Average life of 3,500 hours expected under recommended D.C. operating conditions with characters switched sequentially every 24 hours.
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