Tube-number record
GR 32
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GR 32 is a tube type in the TubeDatabase archive (class: Cold Cathode Relay Tube). Recorded specifications: construction Tetrode, socket 7-pin (non-miniature), and maximum plate voltage 410 V. The archive does not yet hold a photographed example of this type.
ClassCold Cathode Relay Tube
Base7-pin (non-miniature)
Construction
Primary TypeTetrode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage410 V
Cathode Current25 mA
Audio Performance
Key Features
- Cold molybdenum cathode
- Two anodes
- Negligible hysteresis
- Independent of illumination
- Adjustable working range
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| DC Supply 1 | 180 V | — | — | — | 12.5 mA |
| DC Supply 2 | 310 V | — | — | — | 13.5 mA |
| AC Supply 1 | 220 V | — | — | — | 12.5 mA |
| AC Supply 2 | 240 V | — | — | — | 13 mA |
Application Notes
Applications include electronic delay and timer relays, voltage monitoring, photoelectric controls, and contact protection relays.
Datasheets
Datasheet: GR32.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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