UCL82
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BrandPhilips
ClassTriode-Pentode
BaseNoval
Filament50V @ 100mA
Construction
Primary TypeTriode-Pentode
EnvelopeGlass
SectionsTriode section (A.F. amplifier), Pentode section (A.F. output)
Filament / Heater
Heater NotesIndirect heating; series supply; A.C. or D.C.
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation7 W
Grid 2 Voltage250 V
Cathode Current50 mA
H-C Voltage200 V
Audio Performance
Typical THD10%
Power Output3.5 W
Key Features
- Series heater supply
- Low microphonic triode section
- High sensitivity pentode output
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode section typical characteristics | 100V | 2500 | - | 70 | 3.5mA |
| Pentode section Class A | 170V | 7500 | 16000 | 9.5 | 41mA |
| Pentode section Class A maximum output | 200V | 6400 | 20000 | 9.5 | 35mA |
Application Notes
The triode section can be used without special precautions against microphonic effect in circuits in which an input voltage Vi >= 10 mVeff gives an output of 50 mW.
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