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904VSensibly equivalent¶ to:See also:
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The indirectly heated triode Type 904V is described by Mullard as a high magnification detector. The data-sheet gives details of operation as both detector and as an LF (audio) amplifier.![](../pics/acn0063a.jpg)
The Dome carries the identification.Thanks to Mark Mallison for sending the images.The balloon envelope measures mm in diameter and the excluding the B5 base pins, is mm tall.References: Data-sheet & 1043. Type 904V was first introduced in 1931. See also 1931 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | ![](../static/key.gif) a | g1 | h | h | k |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vg | mAa | ra | gm | ![](../static/pdflogo.gif)
| 4.0 | 1.0 | 200 | -2.0 | 1.8 | 34.000 | 2.2 |
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Thanks to Andy Cowley for supplying the above PDF datasheet. |
Updated February 08, 2022.
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