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

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Tube-number record

Z 565 M

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BrandVEB Werk für Fernsehelektronik Berlin
ClassDecade indicator tube
BaseSpecial / none

Construction

Primary TypeOther / special
EnvelopeGlass
Sections10

Filament / Heater

Absolute Maximum Ratings

Plate Voltage140 V
Cathode Current0.25 mA

Audio Performance

Key Features
  • Edelgasgefüllte
  • Kalten Reinmetallkatoden
  • Neon-Glimmentladung
  • Radioactive pre-ionization

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Normal Operation112 V———0.1 mA

Application Notes

Used for display of switching states in tube and transistor counting decades at high counting frequencies. System construction similar to decade counting tubes for uniform display appearance.

Datasheets

Datasheet: Z565M.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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