Tube-number record
3BN6
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BrandTUNG-SOL
ClassGated-Beam Discriminator Pentode
BaseMiniature 7-pin (B7G)
Filament3.15 V @ 600 mA
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialButton
SectionsSingle
Filament / Heater
Heater Notes600 mA series heater operation, controlled warm-up
Absolute Maximum Ratings
Plate Voltage440 V
Grid 2 Voltage110 V
Grid 1 Voltage60 V
Cathode Current13 mA
H-C Voltage200 V
Audio Performance
Typical THD2%
Key Features
- Coated Unipotential Cathode
- Electrostatic Beam Deflection
- Gated-Beam Discriminator
- Controlled Heater Warm-up
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Limiter-Discriminator Service (10.7 MHz) | 63 V | — | 85000 | — | 0.25 mA |
| Limiter-Discriminator Service (10.7 MHz High Supply) | 122 V | — | 330000 | — | 0.49 mA |
| Limiter-Discriminator Service (4.5 MHz) | 121 V | — | 330000 | — |
Application Notes
Designed to perform combined operation of detector and audio-voltage amplifier in 600 mA series heater operated television receivers.
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