Tube-number record
12BW4
0 archive entries
BrandTung-Sol
ClassRectifier
BaseNoval (B9A)
Filament12.6 V @ 450 mA
Construction
Primary TypeDiode
Rectifier TypeFull Wave
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage450 V
H-C Voltage450 V
Audio Performance
Key Features
- Coated Unipotential Cathode
- Miniature Type
- Relatively high output current capabilities
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Capacitor Input Filter | 305 V | — | 82 | — | 100 mA |
| Choke Input Filter | 450 V | — | — | — | 100 mA |
Application Notes
Except for heater ratings, it is identical to the 6BW4.
0 results