{"id":1264,"date":"2013-02-23T20:06:43","date_gmt":"2013-02-23T20:06:43","guid":{"rendered":"http:\/\/www.bartola.co.uk\/valves\/?p=1264"},"modified":"2013-02-24T19:21:06","modified_gmt":"2013-02-24T19:21:06","slug":"russian-pentodes-in-triode-mode","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2013\/02\/23\/russian-pentodes-in-triode-mode\/","title":{"rendered":"Russian pentodes in triode mode"},"content":{"rendered":"

After some proper time tracing the curves, here are a set of Russian high-frequency pentodes in triode-mode for comparison. I was looking at closer ones to D3a and these are the ones I had at hand and wanted to include in the tests:<\/p>\n\n\n\n\n\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n
<\/td>\n6Z5P<\/td>\n6Z9P<\/td>\n6Z11P<\/td>\n6Z49P-D<\/td>\n6Z51P<\/td>\n6P15P<\/td>\n6E5P<\/td>\n6E6P-E<\/td>\nD3a<\/td>\n<\/tr>\n
Vf [V]<\/td>\n6.3<\/td>\n6.3<\/td>\n6.3<\/td>\n6.3<\/td>\n6.3<\/td>\n6.3<\/td>\n6.3<\/td>\n6.3<\/td>\n6.3<\/td>\n<\/tr>\n
If [ma]<\/td>\n450<\/td>\n300<\/td>\n440<\/td>\n300<\/td>\n300<\/td>\n760<\/td>\n600<\/td>\n610<\/td>\n315<\/td>\n<\/tr>\n
Pa [W]<\/td>\n4<\/td>\n3.75<\/td>\n6<\/td>\n3.4<\/td>\n3.5<\/td>\n13.5<\/td>\n10.6<\/td>\n8.8<\/td>\n4.5<\/td>\n<\/tr>\n
Gm [ma\/V]<\/td>\n7<\/td>\n35<\/td>\n33<\/td>\n17.75<\/td>\n29<\/td>\n16<\/td>\n32<\/td>\n25<\/td>\n34<\/td>\n<\/tr>\n
\u03bc<\/td>\n44<\/td>\n36<\/td>\n40<\/td>\n44.3<\/td>\n79.5<\/td>\n22<\/td>\n30<\/td>\n34<\/td>\n68<\/td>\n<\/tr>\n
Ra [\u03a9]<\/td>\n6K2<\/td>\n1k<\/td>\n1K2<\/td>\n2K5<\/td>\n2K7<\/td>\n1K6<\/td>\n960<\/td>\n1K3<\/td>\n2K<\/td>\n<\/tr>\n
Ia [ma]<\/td>\n16<\/td>\n29<\/td>\n40<\/td>\n15.7<\/td>\n23<\/td>\n52<\/td>\n50<\/td>\n30<\/td>\n22<\/td>\n<\/tr>\n
Va [V]<\/td>\n252<\/td>\n125<\/td>\n150<\/td>\n200<\/td>\n150<\/td>\n250<\/td>\n200<\/td>\n200<\/td>\n200<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Well, as you can see in the table above, the 6e5p and 6e6p-e (both tetrodes) were included in the list. \u00a0Some interesting points to highlight:<\/p>\n

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