Tube-number record
VP21
0 archive entries
VP21 is a tube type in the TubeDatabase archive (class: Variable-Mu Screen Pentode). Recorded specifications: brand Osram, construction Pentode, socket 7-pin (non-miniature), and maximum plate voltage 150 V. The archive does not yet hold a photographed example of this type.
BrandOsram
ClassVariable-Mu Screen Pentode
Base7-pin (non-miniature)
Construction
Primary TypePentode
EnvelopeMetallised bulb
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage150 V
Grid 2 Voltage60 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Recommended Operating Condition 1 | 150 V | 1100 | — | — | 2.8 mA |
| Recommended Operating Condition 2 | 150 V | 750 | — | — | 1.5 mA |
| Recommended Operating Condition 3 | 150 V | 50 | — | — |
Application Notes
Primarily suitable for operation as a Detector or in Intermediate frequency Amplifier of a superheterodyne receiver.
0 results