12G-B3
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ClassBEAM POWER TUBE
BaseOctal
Filament12.6V @ 600mA
Construction
Primary Typebeam pentode
EnvelopeGlass with top cap
Base MaterialOctal B5-187
Sectionssingle
Filament / Heater
Warm-up Time11s
Absolute Maximum Ratings
Plate Voltage550 V
Plate Dissipation10 W
Grid 2 Voltage200 V
Grid 1 Voltage-1000 V
Cathode Current150 mA
H-C Voltage200 V
Audio Performance
Key Features
- high-perviance
- horizontal deflection output amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 | 40V | - | - | - | 240mA |
| Condition 2 | 100V | 14000 | 5300 | - | 100mA |
Application Notes
Designed for use as a horizontal deflection output amplifier in transformer-less television receivers.
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