ECL 81
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BrandVEB Funkwerk Erfurt
ClassTriode-Endpentode
BaseNoval
Filament6.3V @ 600mA
Construction
Primary TypeCombined Triode-Output Pentode
EnvelopeGlass
Sections2
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation6.5 W
Grid 2 Voltage250 V
Grid 1 Voltage-1.3 V
Cathode Current45 mA
H-C Voltage75 V
Audio Performance
Typical THD10%
Power Output2.4 W
Key Features
- Universelle Verbundröhre
- Fernsehempfänger
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Section (Static) | 150V | 1600 | - | 56 | 1.3mA |
| Pentode Section (Class A) | 200V | 8750 | 22000 | - | 30mA |
Application Notes
Zur Vermeidung von UKW-Störschwingungen wird empfohlen, unmittelbar vor das Steuergitter einen Schutzwiderstand von mindestens 1000 Ohm zu legen.
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