TubeDatabase
  • Tubes
  • Testers
  • Companies
  • Submit
  • About

Tube-number record

DUODIODE-ENDPENTODE

0 archive entries

DUODIODE-ENDPENTODE is a tube type in the TubeDatabase archive (class: Audio Power Pentode). Recorded specifications: year 1950, construction Multi-section, socket Loctal, maximum plate voltage 250 V, and maximum plate dissipation 9 W. The archive does not yet hold a photographed example of this type.

ClassAudio Power Pentode
BaseLoctal
Filament6.3 V @ 800 mA

Construction

Primary TypeMulti-section
EnvelopeGlass
Sections3

Filament / Heater

Heater NotesOxydkatode, indirekt geheizt

Absolute Maximum Ratings

Plate Voltage250 V
Plate Dissipation9 W
Grid 2 Voltage250 V
Cathode Current55 mA
H-C Voltage100 V

Audio Performance

Typical THD10%
Power Output4.5 W
Key Features
  • Duodiode-Endpentode
  • Indirekt geheizt
  • Hohe Steilheit

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Endpentode250 V900050000—36 mA

Application Notes

Die negative Vorspannung für das Steuergitter der Pentode soll grundsätzlich mittels Katodenwiderstand erzeugt werden. Zur Unterdrückung von UKW-Störschwingungen ist ein Dämpfungswiderstand von etwa 1 kOhm in die Zuleitung zum Steuergitter zu legen.

Filters

0 tubes found

Manufacturers

Brands

    0 results

    Tube Database (7,341 tube types · 1,270 archive entries)

    Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
    DisclaimerA–Z indexSubmit a tube