The PM26 is an output pentode. The load should be 9 kΩ and the output can be 750 mW. This exhibit has a B4 base and side terminal but a B5 version was also made.
The side terminal connects to the screen grid. The heater rating is given on the paper label as is the maximum anode voltage.The balloon envelope is 50 mm in diameter and, excluding the B4 base pins, is 96 mm tall.Reference: Data. Type PM26 was first introduced in 1929. See also 1929 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | st |  a | g1 | f,g3 | f | g2 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | gm |
| 6.0 | 0.17 | 150 | 150 | -15 | 17 | 4.0 | 2.0 |
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Updated August 08, 2023.
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