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U147Sensibly equivalent¶ to:
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The U147 is a full wave HT rectifier for low power AC mains driven equipment. The output of a centre tapped transformer would be applied to the anodes, the rating given is 325-0-325, the common cathode would be the output for the rectified voltage. A effective series resistance of 350 Ohms was required to limit surges and the reservoir capacitor had to be restricted to 16 µF. The valve has two anodes stacked vertically on a common cathode tube.See 6X5GT for details as this is a near equivalent.The wide glass tube envelope is 29 mm in diameter and excluding the IO base pins the valve is 77 mm tall.Reference: 3002. Type U147 was first introduced in 1950. See also 1950 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |  m | h | a(2) | nc | a(1) | nc | h | k |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | mAa |
| 6.3 | 0.6 | 325 | 70 |
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Updated January 05, 2022.
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