Tube-number record
E134
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BrandMullard
ClassOutput Pentode
BaseOctal
Filament6.3 V @ 1.5 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage800 V
Plate Dissipation25 W
Grid 2 Voltage500 V
Cathode Current150 mA
H-C Voltage100 V
Audio Performance
Key Features
- 25W anode dissipation
- AC mains operated equipment
- Distributed load capability
- Fixed or Cathode bias
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode connection | 250 V | 11000 | 15000 | 11 | 100 mA |
| Triode connection | 250 V | 11500 | 910 | 10.5 | 70 mA |
| Single Valve Class A | 250 V | — | — | — | 100 mA |
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