HK-24
0 Tubes in archive
BrandHeintz and Kaufman
ClassGeneral Purpose Triode
BaseSmall 4-Pin Ceramic
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialCeramic
Sections1
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage2000 V
Plate Dissipation25 W
Grid 1 Voltage-250 V
Cathode Current75 mA
Audio Performance
Key Features
- Medium mu universal triode
- Radiation cooled tantalum plate
- VHF efficiency
- No internal insulators
- No getter required
- Braced vertical bar tantalum grid
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radio Frequency Power Amplifier Class C Unmodulated | 2000V | - | - | 25 | 56mA |
| Radio Frequency Power Amplifier Class C Unmodulated | 1500V | - | - | 25 | 75mA |
| Audio Frequency Power Amplifier Class B Modulator (2 Tubes) | 1250V | - | 21200 | - | 136mA |
| Radio Frequency Tripler Amplifier | 1500V | - | - | - | 31mA |
Application Notes
The tantalum plate is designed to run at a cherry red color under normal operation. High vacuum is maintained by the use of tantalum without a getter.
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