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BrandTESLA
ClassCathode Ray Tube
BaseNoval (B9A)
Filament6.3V @ 0.7mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesIndirect heating, oxide cathode
Absolute Maximum Ratings
Plate Voltage2200 V
Grid 2 Voltage4400 V
Grid 1 Voltage-150 V
Cathode Current0.05 mA
H-C Voltage125 V
Audio Performance
Key Features
- Low deflection plate capacity
- High writing speed
- Symmetric deflection
- Nine-pin base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 1500V Anode 3 | 1500V | - | - | - | - |
| 3000V Anode 3 | 1500V | - | - | - | - |
| 4000V Anode 3 | 2000V | - | - | - | - |
Application Notes
Intended for use in high-performance oscillographs. For cathode protection, it is recommended to insert a resistor of approximately 200 kOhm into the cathode lead. Shielding from electrostatic fields with aluminum and electromagnetic fields with soft magnetic material is recommended.
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