ZM1030
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ClassIndicator Tube
Construction
Primary TypeCold cathode gas-filled biquinary numerical indicator tube
EnvelopeGlass with red contrast filter
SectionsBiquinary (2 sections: odd and even)
Filament / Heater
Absolute Maximum Ratings
Plate Voltage170 V
Grid 2 Voltage80 V
Grid 1 Voltage-110 V
Cathode Current5 mA
Audio Performance
Key Features
- Side viewing
- Red contrast filter
- Biquinary numbering system
- Cold cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| D.C. operation | 200V | - | 15000 | - | 4mA |
| D.C. operation (high) | 300V | - | 39000 | - | 4mA |
| A.C. operation (full wave rectified) | 170V | - | 15000 | - | 4mA |
Application Notes
The cathodes are internally connected in pairs: 0-1, 2-3, 4-5, 6-7, 8-9. Switching is accomplished by varying anode voltages between the two sections.
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