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

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50AVP vacuum tube outline illustration

Tube-number record

50AVP

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50AVP is a tube type in the TubeDatabase archive (class: Photomultiplier Tube). Recorded specifications: brand Philips, construction Multi-section, socket Duodecal, maximum plate voltage 2250 V, and maximum plate dissipation 0.5 W. The archive does not yet hold a photographed example of this type.

BrandPhilips
ClassPhotomultiplier Tube
BaseDuodecal

Construction

Primary TypeMulti-section
EnvelopeGlass
Sections11

Filament / Heater

Absolute Maximum Ratings

Plate Voltage2250 V
Plate Dissipation0.5 W

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Supply voltage at 1800V1800 V——2500000—

Application Notes

Dynode No. 2 is internally connected to a voltage divider (2x 2 MOhm) between S1 and S3. Tube should be kept in complete darkness and allowed half an hour for stabilization. Mu-metal screening is recommended for magnetic field protection.

Datasheets

Datasheet: 50AVP.pdf

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

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    Cathode Current0.1 mA

    Audio Performance

    Key Features
    • 11-stage current amplification
    • Semi-transparent head-on photocathode
    • Optically flat and parallel window
    • Designed for scintillation counters