{"id":1228,"date":"2013-02-18T19:40:41","date_gmt":"2013-02-18T19:40:41","guid":{"rendered":"http:\/\/www.bartola.co.uk\/valves\/?p=1228"},"modified":"2013-02-18T19:40:41","modified_gmt":"2013-02-18T19:40:41","slug":"6e5p6%d1%8d5%d0%bf-and-6e6p-e6%d1%8d6%d0%bf-e-in-triode-mode","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2013\/02\/18\/6e5p6%d1%8d5%d0%bf-and-6e6p-e6%d1%8d6%d0%bf-e-in-triode-mode\/","title":{"rendered":"6E5P\/6\u042d5\u041f and 6E6P-E\/6\u042d6\u041f-E in triode mode"},"content":{"rendered":"

One of the first valves I traced with my curve tracer<\/a> was the\u00a06E5P\/6\u042d5\u041f<\/a>. It has a very good reputation when triode-strapped. I did many tests and found this one being a superb driver given is one of the most linear valves out there. Many use them as a 300B driver. I will probably implement Rod Coleman’s shunt cascode topology in my 45 SE or in a 6C4C\/4P1L PSE design.<\/p>\n

Over the weekend I traced many valves as managed to recalibrate the oscilloscope and tracer and wanted to play with some samples I had around.<\/p>\n

Here is the\u00a06E5P\/6\u042d5\u041f in triode mode:<\/p>\n

\"65ep<\/a>And here are the updated SPICE model parameters:<\/p>\n

\"6e5p<\/a>Now, let’s have a look at it’s close brother the\u00a06E6P-E\/6\u042d6\u041f-E<\/a> in triode mode. It has a long life (10,000 hours against only 500hours):<\/p>\n

\"6e6p-e<\/a><\/p>\n

\"6e6p-e<\/a>Many praise the 6e6p-DR<\/a> tetrode over these two, I haven’t tried it yet myself but here are the minor differences between \u00a06E5P\/6\u042d5\u041f and 6E6P-E\/6\u042d6\u041f-E to highlight:<\/p>\n