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Hits: 2453 Replies: 8
6J5 chinese power tube pin assignment
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Giuseppe Feniello
16.Nov.20 |
1
Hello radiofriends, recently I have bought a tube preamplifier that uses two 6J5 tube ( chinese version with 7 pins ). Please have someone the pin configuration for this tube? many thanks in advance. |
Bernhard Nagel
16.Nov.20 |
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Hello Giuseppe, please show some good detailed pictures of the 7-pin Chinese 6J5 here in the forum and upload them also to the tube page. Maybe the pin-out can be determined by examination the pics. Furthermore, the preamplifier should be added as a new model suggestion. Until now, the only model in RMorg using this tube, is a Chinese console Peony 牡丹 1201. Real pictures are stil missing there. According to the schematic, the Chinese 6J5 is a kind of beam power tube. It's not a triode, in contrast to all other 6J5 variants. Thanks for your assistance in this matter. Best regards |
Giuseppe Feniello
16.Nov.20 |
3
Hello Bernhard, thanks for your reply, till now I have found the pins 3 and 4 are the heater filament, and think the pins are the same of the chinese 6J1 pentode, but obviously I'm not sure! The heater current is about 430mA @ 6,3Vcc this preamp is a kit, not a complete model..... I have attached a photo of this tube best regards... G. Attachments
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Jacob Roschy
17.Nov.20 |
4
Hello, the 6J5_China is obviously the Chinese version of the Russian 6Ж5П, which in turn is the Russian version of the 6AH6. It uses a beam structure, but it's no power output tube, - which wouldn't make sense in a preamplifier. Best Regards,
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Giuseppe Feniello
17.Nov.20 |
5
Thanks Jacob for your notes ! so the pin assignment are like the russian version .....in my preamp, this tube is used as a triode with a connection between pin 5 and 6. However the chinese schematic uses it as a power output tube in the AF final stage..... now I know all the pins functions....thanks again. best regards. G. |
Jacob Roschy
17.Nov.20 |
6
The datasheet of the equivalent 6AH6 tells about a maximum plate dissipation of 3.2 W, a nominal operating plate current of 10 mA at 300 V, which may be sufficient for a modest output power, but there is nothing told about this use. B R, Jacob |
Giuseppe Feniello
17.Nov.20 |
7
Thanks Jacob, the the pin assignment picture in the 6J5_China page is not the right one, in reality there is not an internal connection between pin 2 and pin 7.....I have uploaded a new pin assignment picture. B R..... G. Attachments
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Jacob Roschy
17.Nov.20 |
8
Unfortunately a wrong base diagram was shown at the original 6AH6 page, which I've copied unaware to the 6J5_China page. Now I've replaced it by the correct one everywhere. BR Jacob |
Giuseppe Feniello
18.Nov.20 |
9
THANKS !!! Now the tube page is OK ! |
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