Tube-number record
6DR7
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BrandTUNG-SOL
ClassDouble Triode
BaseNoval (B9A)
Filament2.4 V @ 900 mA
Construction
Primary TypeDual triode
EnvelopeGlass
Base MaterialMiniature Button
Sections2
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation7 W
Grid 1 Voltage-400 V
Cathode Current50 mA
H-C Voltage200 V
Audio Performance
Key Features
- Dissimilar Section Construction
- High Mu Section for Oscillator
- Low Mu Section for Deflection Amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Section 1 Oscillator | 250 V | 1600 | 40000 | 68 | 1.4 mA |
| Section 2 Amplifier | 150 V | 6500 | 925 | 6 | 35 mA |
Application Notes
Section #1 intended for use as vertical deflection oscillator. Section #2 designed for use as vertical deflection amplifier and is identical to Section #2 of the 6DE7.
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