Antique radios, Old Time Radios
D-79512
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Country:
United States of America (USA)
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| Identical to |
D-79512
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| Similar
Tubes |
Different maximum ratings:
D-79510
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| Predecessor Tubes |
205B
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| Was used by |
Technology / Measurement |
| Filament |
Vf 4.5 Volts / If 1.6 Ampere / Direct |
| Description |
Ionization gauge with glass tube on top as inlet measurement port. Pear-shaped hard-glass (Nonex) version of D-79510.
As ionization gauge the anode is biased negative, -2 to -10 volts, while the grid must be positive, 100 to 125 volts typical, 5 to 25 mA. In operation filament voltage must be reduced for a grid current of 21 mA at 110 V DC. In this condition the pressure in mm. of mercury is about five times the plate current in amperes, P = 5 Ip.
Data and applications given in a PDF booklet attached to the D-79510 sensor.
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| Information source |
Tube Lore (I)
- - Manufacturers Literature
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