D13-27
0 Tubes in archive
ClassInstrument Cathode-Ray Tube
Base14-pin all-glass
Filament6.3V @ 300mA
Construction
Primary TypeCRT
EnvelopeGlass
Base MaterialGlass
SectionsSingle gun
Filament / Heater
Heater NotesIndirect heating by A.C. or D.C.; parallel supply
Absolute Maximum Ratings
Plate Voltage3300 V
Grid 2 Voltage1700 V
Grid 1 Voltage-200 V
Cathode Current0.3 mA
Audio Performance
Key Features
- 13 cm diameter flat faced
- Post-deflection acceleration
- Helical electrode
- Deflection blanking
- Symmetrical x and y plates
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Oscilloscope | 3000V | - | - | - | 0.01mA |
Application Notes
The tube should not be supported by the base alone and under no circumstances should the socket be allowed to support the tube.
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