Tube-number record
7729
0 archive entries
7729 is a tube type in the TubeDatabase archive (class: High-mu twin triode). Recorded specifications: brand CBS, construction Triode, base Gold plated base pins, socket Noval (B9A), maximum plate voltage 330 V, and maximum plate dissipation 1.1 W. The archive does not yet hold a photographed example of this type.
BrandCBS
ClassHigh-mu twin triode
BaseNoval (B9A)
Filament6.3 V @ 300 mA
Construction
Primary TypeTriode
EnvelopeT-6 1/2
Base MaterialGold plated base pins
SectionsTwin
Filament / Heater
Heater NotesContinuous-wound coil heater
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation1.1 W
Grid 1 Voltage-55 V
Cathode Current20 mA
H-C Voltage200 V
Audio Performance
Key Features
- High reliability
- Stable characteristics
- Long life
- Continuous-wound coil heater
- Gold plated base pins
- Low noise and microphonism
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 100 V | 1250 | 80000 | 100 | 0.5 mA |
| Class A Amplifier | 250 V | 1600 | 62500 | 100 | 1.2 mA |
Application Notes
Designed and tested for use in measurement test equipment, instrumentation, and applications requiring extreme reliability.
Datasheets
Datasheet: 7729.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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