Tube-number record
25W6GT
0 archive entries
BrandTung-Sol
ClassBeam Pentode Power Amplifier
BaseOctal
Filament25 V @ 0.3 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeT-9
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation10 W
Grid 2 Voltage150 V
Grid 1 Voltage250 V
Cathode Current40 mA
H-C Voltage200 V
Audio Performance
Typical THD10%
Power Output3.8 W
Key Features
- Coated Unipotential Cathode
- Any Mounting Position
- Vertical Scanning Output Tube
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier (Fixed Bias) | 110 V | 8000 | 13000 | — | 49 mA |
| Class A1 Amplifier (Cathode Bias) | 200 V | 8000 | 28000 | — | 46 mA |
| Triode Connection | 225 V | 3800 | 1600 | 6.2 | 22 mA |
Application Notes
Designed specifically for use as a vertical scanning output tube in television receivers. For operation in 525-line, 30-frame systems, the duty cycle of the voltage pulse must not exceed 15 percent of a scanning cycle.
0 results