The Philips 328 is a directly heated full wave rectifier from 1930. This is a low voltage device and was probably used to charge domestic radio accumulators.
The B4 Base pins.Thanks to Mark Mallison for sending the images.The wide glass tube envelope is mm in diameter, and excluding the B4 base pins is mm tall.Reference: Data. Type 328 was first introduced in 1930. See also 1930 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 |  a | a | f | f |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | mAa |
| 1.85 | 2.8 | 28 | 1,300 |
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Updated September 27, 2024.
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