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Old 7th February 2013, 02:08 AM   #1
banaca is offline banaca  Canada
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Default Got some 6n3c-e (6p3s-e)with blank bulb?

Just got myself some NOS NIB 5881 6n3c-E big bulb 6L6GC vacuum tubes... they are blank??? Generic??? Nothing written on them. The guy who sold them to me said they are from Russia ( like the 6p3s-e) They are coin base etc... they are mathed quad '48' written on the box. Any info on those???
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Old 7th February 2013, 05:18 AM   #2
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I have used those a lot. Just refer to the specifications of 5881, not 6L6GC.
In my constructions - UL - the supply voltage has been 450 V, Raa 6k6 and output power some 30...35 W. Typical optimum quiescent cathode current is some 46...50 mA.
I have had no problems at all.
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Old 7th February 2013, 05:22 AM   #3
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Looks exactly like 6П3С-Е
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Old 8th February 2013, 12:36 AM   #4
banaca is offline banaca  Canada
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Quote:
Originally Posted by artosalo View Post
I have used those a lot. Just refer to the specifications of 5881, not 6L6GC.
In my constructions - UL - the supply voltage has been 450 V, Raa 6k6 and output power some 30...35 W. Typical optimum quiescent cathode current is some 46...50 mA.
I have had no problems at all.
Merci!! Thanks!!
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Old 8th February 2013, 12:39 AM   #5
banaca is offline banaca  Canada
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Originally Posted by Wavebourn View Post
Looks exactly like 6П3С-Е
Merci, Thanks! BTW, the getter is on top, just one ring... not two small ring...superposed like the 6p3s-e... just one small ring...
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Old 10th February 2013, 01:23 AM   #6
banaca is offline banaca  Canada
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See, just one getter
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Old 10th February 2013, 03:00 AM   #7
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Originally Posted by banaca View Post
See, just one getter
Yes, just one ring shaped getter holder. I've only seen them with two holders in the form of small plates and, I mean, I've seen hundreds of these.. (at some point I had around 3000 from the mid '80's)
Besides, the the glass envelope of the tube in your picture on the right doesn't look straight.
Maybe they're rejects?
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Old 10th February 2013, 03:27 AM   #8
banaca is offline banaca  Canada
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Originally Posted by elektroj View Post
Yes, just one ring shaped getter holder. I've only seen them with two holders in the form of small plates and, I mean, I've seen hundreds of these.. (at some point I had around 3000 from the mid '80's)
Besides, the the glass envelope of the tube in your picture on the right doesn't look straight.
Maybe they're rejects?
Maybe they are rejets... they do look straight here I don't know... anyway, I did see that the Electro Harmonix 6L6 has the same getter as mine... strange...I will post a pic of it...look..
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