Tube-number record
10DR7
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BrandTUNG-SOL
ClassDouble Triode
BaseNoval (B9A)
Filament3.7 V @ 600 mA
Construction
Primary TypeDual triode
EnvelopeGlass
Sections2
Filament / Heater
MaterialCoated Unipotential Cathode
Warm-up Time11s
Heater NotesThermal characteristics of the heater are controlled such that heater voltage surges during the warm-up cycle are minimized.
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 Double Triode
- Controlled Heater Warm-up Time
- High Mu Oscillator Section
- Low Mu Amplifier Section
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Section 1 Vertical Deflection Oscillator | 250 V | 1600 | 40000 | 68 | 1.4 mA |
| Section 2 Vertical Deflection Amplifier | 150 V | 6500 | 925 | 6 | 35 mA |
Application Notes
Section 2 is designed for use as a vertical deflection amplifier and is identical to Section 2 of the 6DE7. Intended for use in series heater strings.
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