EAF 801
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BrandTELEFUNKEN
ClassRegelbare HF- und ZF-Pentode mit Diode
BaseNoval
Filament6.3V @ 300mA
Construction
Primary TypePentode with Diode
EnvelopeGlass
Base MaterialGlass
SectionsDouble
Filament / Heater
Heater NotesIndirectly heated, parallel or series connection
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.25 W
Grid 2 Voltage300 V
Cathode Current16.5 mA
H-C Voltage100 V
Audio Performance
Key Features
- Remote cutoff RF/IF pentode
- Single diode included
- Pico9/Noval base
- Normalized heater warm-up time
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Measuring Value 1 | 250V | 4500 | 900000 | - | 9mA |
| Pentode Measuring Value 2 | 250V | 3800 | 1000000 | - | 9mA |
| RF/IF Amplifier Operation 1 | 200V | 4500 | 650000 | - | 9mA |
| RF/IF Amplifier Operation 2 | 250V | 4500 | 900000 | - | 9mA |
Application Notes
If cathode resistor Rk is not capacitively shunted, transconductance is approx 30% lower and plate resistance approx 10% higher.
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