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1tubes:tabl-out
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1tubes:tabl-out [2020/03/12 23:17] staudio [Таблица] |
1tubes:tabl-out [2020/09/18 17:08] (текущий) staudio |
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| + | ==== Эквиваленты ламп ==== | ||
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| + | There are a number of BPTs of interest that I have very little data about.\\ | ||
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| + | The first group would be those that seem to have Euro or US equivalents: | ||
| + | 6P7S is said to be equivalent to 6BG6 which is fairly well known to work nice connected as a triode.\\ | ||
| + | 6P20S is said to be equivalent to 6CB5, curves are somewhat similar but I have not seen anything about triode mode, considering the relatively low Vg2 maximum.\\ | ||
| + | 6P27S is often referred to as an equivalent to the EL34, but even though pentode curves are somewhat similar, this is obviously wrong as the 6P27S is a BPT and the EL34 a true pentode. One look at the 6P27S triode curves tells the tale - they are very similar to those of the 6P3S/6L6. This tbe seems to me to be related to the 6P3S...\\ | ||
| + | 6P31S is often relabeled as the euro EL36, but the specs give less anode dissipation. The EL/PL36 is very good in triode (far better than specs would suggest) but I don't know anything about using the 6P31S that way.\\ | ||
| + | \\ | ||
| + | The second group of tubes are those that don't seem to have Euro or US equivalents: | ||
| + | 6P21S is apparently a directly heated BPT with 18W plate dissipation. Unfortunately, | ||
| + | 6P23P seems to be a smaller version, with 11W plate dissipation. Again, i have nothing more but general data.\\ | ||
| + | 6P42S seems very similar to the 6P45S except the drawing I have shows a much smaller base, perhaps noval instead of the 6P45S magnoval? I only have general data and a drawing of the bulb...\\ | ||
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| + | The third group are power BPTs that have no top cap and seem to have no Eu or US equivalents as well:\\ | ||
| + | 6P34S is a 18W PBT which, from the drawing, I guess has an octal base. It appears to have fairly low maximum voltages for plate and G2 too...\\ | ||
| + | 6P39S is a very interesting 10W relatively low voltage but very high Gm pentode (56mA/V!) in a most curious bulb - seems like a noval base with 30mm diameter bulb. Again, I have no more data...\\ | ||
| + | 6P41S has the same 30mm bulb, but (I am guessing) magnoval base, it reminds me somewhat of the EL508, but seems to have lower maximum voltages and higher plate dissipation.\\ | ||
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1tubes/tabl-out.1584044244.txt.gz · Последнее изменение: 2020/03/12 23:17 — staudio
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