HL.41
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BrandMazda
ClassTriode
BaseBritish Octal
Filament4V @ 0.65mA
Construction
Primary Typetriode
Envelopemetallised
Sectionssingle
Filament / Heater
Heater NotesA.C. Mains operation
Absolute Maximum Ratings
Plate Voltage250 V
Audio Performance
Typical THD2.5%
Key Features
- Indirectly heated
- Small dimensions
- Metallised bulb
- High mu triode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Characteristics | 100V | 3500 | 10300 | 36 | - |
| R.C.C. Amplifier | 250V | - | - | 27 | 2.2mA |
| R.C.C. Amplifier with Decoupling | 250V | - | - | 27 | 1.9mA |
Application Notes
The HL.41 may be used as an L.F. amplifier with either R.C. or transformer coupling, or as an oscillator where a high mu triode is required.
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