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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.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 | a | g1 | h | h | k |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vg | mAa | ra | gm |
| 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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