18517
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BrandPhilips
ClassAnticoincidence Guard Counter Tube
BaseScrew Terminal
Construction
Primary TypeHalogen quenched Geiger-Müller counter tube
EnvelopeMetal
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1200 V
Audio Performance
Key Features
- Halogen quenched
- Low background
- Cosmic ray guard
- Anticoincidence design
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal Operation | 1000V | - | 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.
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