Tube-number record
CV4085
0 archive entries
BrandThe M-O Valve Co. Ltd.
ClassAF Pentode
BaseNoval (B9A)
Filament6.3 V @ 200 mA
Construction
Primary TypePentode
EnvelopeTubular
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation1 W
Grid 2 Voltage250 V
Cathode Current6 mA
H-C Voltage100 V
Audio Performance
Key Features
- Rugged
- Low noise
- Low hum
- Low microphony
- Vibration resistant
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Connection | 250 V | 2000 | 2500000 | 38 | 3 mA |
| Triode Connection | 250 V | 2200 | 16500 | 36 | 4 mA |
Application Notes
Suitable for use in low level, low frequency amplifiers under conditions of abnormal shock and vibration.
Datasheets
Datasheet: CV4085.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results