TT-27
0 Tubes in archive
BrandBendix
ClassGas and Special Tubes
BaseMetal Caps
Construction
Primary TypeSingle Convectron Unit
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialNickel
Absolute Maximum Ratings
Plate Voltage10 V
Audio Performance
Key Features
- Fine wire sensing element
- Gaseous atmosphere
- Convection-based sensing
- Nickel filament for resistivity change
- Differential output via bridge circuit
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Bridge Circuit | 8V | - | - | - | - |
Application Notes
Two Type TT-27 tubes are required for installation, mounted with axes at 90 degrees to form a bridge circuit. Measures deviations from vertical reference wholly by electronic means. Sensitivity can be increased by decreasing the tube angle to 60 degrees.
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