PL805
0 Tubes in archive
BrandTelefunken
ClassPower Pentode
BaseNoval
Filament15V @ 300mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesSeries supply, DC-AC-heating
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation8 W
Grid 2 Voltage250 V
Cathode Current75 mA
H-C Voltage200 V
Audio Performance
Key Features
- Endpentode für vertikale Ablenkung in FS-Geräten
- Power pentode for vertical deflection in TV sets
- Indirectly heated
- Series supply
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pulse operation (Measuring value) | 50V | - | - | - | 200mA |
| Pulse operation (Measuring value) | 65V | - | - | - | 285mA |
Application Notes
Circuit must be designed for a maximum rating of the peak anode current of 60% of the characteristic for Ug1 = -1V to allow for tube tolerances and 10% mains voltage drop.
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