DL 41
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BrandPhilips
ClassOutput Pentode
BaseRimlock
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialDirectly Heated
Absolute Maximum Ratings
Plate Voltage150 V
Plate Dissipation1.2 W
Grid 2 Voltage150 V
Grid 1 Voltage-0.2 V
Cathode Current16 mA
Audio Performance
Key Features
- Directly heated
- Battery operation
- Series or parallel heating
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A (50mA filament supply) | 120V | 1350 | 165000 | 10 | 5mA |
| Class A (100mA filament supply) | 120V | 2550 | 80000 | 10 | 10mA |
| Class A (2.8V filament supply) | 120V | 2450 | 95000 | 10 | 9mA |
Application Notes
When Vi = 0, Va and Vg2 may increase to 180V. Designed for battery receivers.
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