Tube-number record
21HB5-A
0 archive entries
BrandGeneral Electric
ClassBeam Power Pentode
BaseCompactron
Filament21 V @ 0.45 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeT-12
SectionsSingle
Filament / Heater
Warm-up Time11s
Absolute Maximum Ratings
Plate Voltage770 V
Plate Dissipation18 W
Grid 2 Voltage220 V
Grid 1 Voltage-55 V
Cathode Current230 mA
H-C Voltage200 V
Audio Performance
Key Features
- Compactron beam-power pentode
- TV horizontal-deflection amplifier applications
- Unilaterally interchangeable with the 21HB5
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Peak Plate Current point | 50 V | — | — | — | 450 mA |
| Typical Operation | 130 V | 9000 | 9900 | 4.8 | 46 mA |
0 results