The Tungsram PV475 is a directly heated full wave rectifier.
The original envelope markings have degraded. The mirror gettering covers the whole inside of the glass.The balloon envelope is 50 mm in diameter, and excluding the base pins is 95 mm tall.Reference: Data. Type PV475 was first introduced in 1930. See also 1930 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 |  a1 | a2 | f | f |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | mAa |
| 4.0 | 0.8 | 250 | 50 |
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Updated February 26, 2026.
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