LV 1
0 Tubes in archive
BrandTelefunken
ClassPentode
BaseTelefunken Lg.-Nr. 1731
Filament12.6V @ 210mA
Construction
Primary TypePentode
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesIndirectly heated oxide cathode; series operation permissible with 600 Ohm resistor replacement.
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation10 W
Grid 2 Voltage400 V
Cathode Current40 mA
H-C Voltage100 V
Audio Performance
Power Output4.5 W
Key Features
- Low noise pentode
- Broadband amplifier
- Shock and vibration resistant
- Suitable for onboard/mobile use
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| HF/NF Pre-amplifier (Class A) | 250V | 9500 | 200000 | - | 20mA |
| NF Output Stage (Class A) - 400V | 400V | - | - | - | 25mA |
| HF Transmitter Amplifier (Class B) | 400V | - | - | - | 32mA |
Application Notes
Recommended for broadband amplifiers, pre-amplifiers, and output/transmitter stages. Grid 3 (suppressor) modulation is possible for long-wave operation.
Datasheet Viewer
Loading datasheet...
Sort by
Showing 1 to 0 of 0 results