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(Philips Lorenz Telefunken Siemens)
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ECC40 |
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The EC92 6AB4 Gallery |
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Single triode preamp tube. Also found as 6AB4 tube. This type appears in several Europan tube amps and also in some tube microphones as the Neumann Gefell CMV 563. |
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| D-Getter Tubes | |||||
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Siemens Code 4A ‡r Characteristics: - welded plate - smaller D-Getter |
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Code 4A D1 - D4 Valvo Characteristics: - 1 time stapled plate - larger D-Getter |
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Valvo Code 4A D8 Characteristics: - 2 times stapled plate - larger D-Getter |
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Valvo Code 4P DF Characteristics: - 2 times stapled plate - larger D-Getter - one "flag"of getter support above mica - also found with 311 D8J |
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| Ring Getter Tubes | |||||
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Siemens Code 312 ‡xx Characteristics: - one hole in plate - straight, cylindric, getter support with "bridge" to heater |
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Siemens Code VH0 ‡xx Characteristics: - one hole in plate - straight, cylindric, getter support |
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Siemens Code VH1 ‡xx Characteristics: - one hole in plate - flat getter support |
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Siemens Code VH3 ‡xx Characteristics: - two holes in plate - flat getter support |
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Siemens Code VH4 ‡xx Characteristics: - two holes in plate - flat getter support (slightly different) |
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Telefunken Characteristics: - <> between pins - typical TFK ring getter |
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