GR 32
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ClassCold Cathode Relay Tube
Base7-pin
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 | 180V | - | - | - | 12.5mA |
| DC Supply 2 | 310V | - | - | - | 13.5mA |
| AC Supply 1 | 220V | - | - | - | 12.5mA |
| AC Supply 2 | 240V | - | - | - | 13mA |
Application Notes
Applications include electronic delay and timer relays, voltage monitoring, photoelectric controls, and contact protection relays.
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