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

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Tube-number record

6539

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BrandMullard Limited
ClassCold cathode inert gas-filled tube
BaseNoval (B9A)

Construction

Primary TypeOther / special
EnvelopeGlass
SectionsCold cathode with priming discharge

Filament / Heater

Absolute Maximum Ratings

Cathode Current2.9 mA

Audio Performance

Key Features
  • Inert gas-filled
  • Priming discharge
  • Cold cathode

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Maintaining Voltage105 V———2 mA

Application Notes

Primarily intended for use in conjunction with Geiger-Muller tubes in radiation monitoring equipment and for use in low current stabilizer circuits.

Datasheets

Datasheet: 6539.pdf

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

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