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

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18517 vacuum tube outline illustration

Tube-number record

18517

0 archive entries

18517 is a tube type in the TubeDatabase archive (class: Anticoincidence Guard Counter Tube). Recorded specifications: brand Philips, construction Other / special, socket Special / none, and maximum plate voltage 1200 V. The archive does not yet hold a photographed example of this type.

BrandPhilips
ClassAnticoincidence Guard Counter Tube
BaseSpecial / none

Construction

Primary TypeOther / special
EnvelopeMetal
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage1200 V

Audio Performance

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Normal Operation1000 V—10000000——

Application Notes

Recommended for use as a guard tube in anticoincidence circuits in combination with type 18515. Low capacitance mounting is required. Tube must be kept dry and clean to prevent leakage.

Datasheets

Datasheet: 18517.pdf

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

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    Key Features
    • Halogen quenched
    • Low background
    • Cosmic ray guard
    • Anticoincidence design