Tube-number record
GR 17
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ClassCold Cathode Relay Tube
Construction
Primary TypeTriode
Rectifier TypeHalf-wave
EnvelopeGlass
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage450 V
Grid 1 Voltage150 V
Cathode Current40 mA
Audio Performance
Key Features
- Cold molybdenum cathode
- Internal shield
- AC anode supply
- High sensitivity
- Gas-filled relay
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AC Triode Operation | 220 V | — | — | — | 15 mA |
Application Notes
The tube acts as a rectifier. Ignition occurs when the anode is positive and the starter is negative. Minimum control current 1 to 2 µA. Internal shield W can be connected to the cathode via a 1,000,000 Ohms resistor to avoid influence from external fields.
Datasheets
Datasheet: GR17.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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