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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)
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18509/02 vacuum tube outline illustration

Tube-number record

18509/02

0 archive entries

18509/02 is a tube type in the TubeDatabase archive (class: Micro Radiation Counter Tube). Recorded specifications: brand PHILIPS, construction Other / special, socket Flexible / flying leads, and maximum plate voltage 650 V. The archive does not yet hold a photographed example of this type.

BrandPHILIPS
ClassMicro Radiation Counter Tube
BaseFlexible / flying leads

Construction

Primary TypeOther / special
EnvelopeMetal Wall
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage650 V

Audio Performance

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Operating Plateau500 V—2000000——

Application Notes

Low capacitance mounting of the counter tube is required (short connections). Because of the small thickness of the cathode wall (0.1 mm) utmost care should be taken at handling the tube. In order to prevent leakage the tube should be kept dry and well cleaned.

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    Key Features
    • Self quenching
    • Measurement of gamma and high-energy beta radiation
    • Low capacitance mounting
    • Small dimensions