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7730
- Maker
- Cbs
- Brand
- Heintz & Kaufman
Tube-number record
7730
2 archive entries
BrandCBS
ClassMedium-Mu Twin Triode
BaseNoval (B9A)
Filament12.6 V @ 150 mA
Construction
Primary TypeDual triode
EnvelopeT-6 1/2
Base MaterialGold plated base pins
SectionsTwin
Filament / Heater
Heater NotesContinuous-wound coil heater; Series or Parallel operation
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation3 W
Cathode Current20 mA
H-C Voltage200 V
Audio Performance
Key Features
- Gold plated base pins
- Continuous-wound coil heater
- 48 hour burn-in period
- Resistance against interface impedance
- Low noise and microphonism
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (Section 1) | 100 V | 3100 | 6500 | 20 | 11.8 mA |
| Class A Amplifier (Section 2) | 250 V | 2200 | 7700 | 17 | 10.5 mA |
Application Notes
Designed for use in measurement test equipment, instrumentation, and other applications requiring extreme reliability and stable characteristics.
Datasheets
Datasheet: 7730.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
