Tube-number record
EZ 10
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BrandELESTA
ClassDecade Counter Tube
BaseNoval (B9A)
Construction
Primary TypeOther / special
EnvelopeGlass
Sections10 Main Cathodes, 10 Auxiliary Cathodes
Filament / Heater
Absolute Maximum Ratings
Plate Voltage560 V
Audio Performance
Key Features
- Decade counter with cold cathodes
- Small external dimensions equivalent to Noval tubes
- Counting speeds up to 200 kHz
- 10 main cathodes separately accessible for readout and coincidence
- Insensitive to supply voltage fluctuations
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard counting | 280 V | — | 220000 | — | — |
Application Notes
Used in electronic counting stages, pulse shaping circuits, and coincidence detection. Anode resistor should be mounted directly at the socket to avoid parasitic capacitances.
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