Tube-number record
CL 4
0 archive entries
CL 4 is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand PHILIPS, construction Pentode, socket Side-contact (P-base), maximum plate voltage 250 V, and maximum plate dissipation 9 W. The archive does not yet hold a photographed example of this type.
BrandPHILIPS
ClassOutput Pentode
BaseSide-contact (P-base)
Filament33 V @ 200 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect; series supply A.C. or D.C.
Absolute Maximum Ratings
Plate Voltage250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A, one valve | 200 V | 8000 | 35000 | — | 45 mA |
| Class AB, two valves | 200 V | — | — | — | 66 mA |
Application Notes
This valve should only be used with automatic grid bias.
Datasheets
Datasheet: CL4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results