The DV-3 is a triode from De Forest that appeared in about 1925. It features a 3.0 Volt filament for use with dry cells. For dry cell use the filament must be a low consumption type, so not a bright emitter.Thanks to Dan Absher for the picture and information.The wide glass tube envelope is 32 mm in diameter, and excluding the UV base pins is mm tall.Reference: Bill Condon & 1047. Type DV-3 was first introduced in 1925. See also 1925 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | f | a | g1 | f |
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Absolute Maximum Operating Conditions¶
| Vh |
| 3.0 |
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Updated September 19, 2020.
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