HL25
0 Tubes in archive
BrandFerranti
ClassHigh Voltage Control Triode
BaseInternational Octal
Filament4V @ 1000mA
Construction
Primary Typetriode
EnvelopeSilicone coated clear glass
Sections1
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage15000 V
Plate Dissipation4 W
Grid 1 Voltage-150 V
Cathode Current1 mA
H-C Voltage150 V
Audio Performance
Key Features
- Silicone coated clear glass
- High voltage control valve
- Voltage regulator application
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Cut-off | 15000V | - | - | - | - |
| la = 5uA | 15000V | - | - | - | 0.005mA |
Application Notes
The high voltages normally applied to this valve can be very dangerous. Particular care should be taken when making circuit adjustments.
Sort by
Showing 1 to 0 of 0 results