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Other (3257), Pre (2314), Power (1030), Rectifier (740)
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M.S./PEN

0 Tubes in archive

BrandCossor
ClassH.F. Pentode
Base7-pin (non-miniature)
Filament4V @ 1mA

Construction

Primary TypePentode
EnvelopeMetallized coating
SectionsSingle

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage200 V
Grid 2 Voltage100 V

Audio Performance

Key Features
  • Indirectly heated
  • No variable-mu characteristics
  • Metallised coating brought out to separate pin
  • Suppressor grid separate in 7-pin base

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Standard200V3500---
Biased200V2800---

Application Notes

Similar to M.V.S./PEN but without variable-mu. Suitable for use in place of ordinary screen grid valves or in detector stages for very high gain.

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