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Re: Juvenile request [message #30407 is a reply to message #30397] |
Sat, 05 February 2005 12:02 ![Go to previous message Go to previous message](/forum/theme/AudioRoundTable/images/up.png) ![Go to next message Go to previous message](/forum/theme/AudioRoundTable/images/down.png) |
Damir
Messages: 1005 Registered: May 2009
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Illuminati (2nd Degree) |
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SE 2A3 (6B4G, 6A3) power amp would be rel. easy, IMO - with typical OP (Uak=250V, Ugk=-45V, Ia=60mA, Ra=2k5, Pout=3,5W), we need about 32Vrms "input" from the driver for the full power. With our high-output "Guinevere" line stage, we can comfortably use one - tube driver with active load, say again 5687, or ECC99, E182CC, or something from 6SN7 "family", say 6J5GT single triode. PS would be little more complicated, say LCLC for B+ of about 300V, motor-run caps again. For the input tube/driver additional LC (or RC stage). With active (DN2540 again) load, about 300V or little less is enough B+ for the above tubes. I can draw the schematic, even breadbord the prototipe, I`m sure that Doug can give some ideas, especially with Hg-rectifiers (I don`t have the experience with those). All in all, IMO - project easy enough to build, but "good enough" (with good transformers - "Heyboer" again, or...?). PP 2A3 is another option, maybe better - but little more complicated, especially phase splitter/driver - it`s hard to do it "right" simple. Probably larger/separated B+ for the driver is in the order (400V or so, even larger), and probably 2-stage is requied. Just some thoughts, we`ll see... ![](http://www.audioroundtable.com/emoticons/smiley.gif)
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Juvenile request
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Put down the iron, walk away from the Stoetkit and .....
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Re: Put down the iron, walk away from the Stoetkit and .....
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Just being a goof....
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Re: Just being a goof....
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Re: Juvenile request
By: Damir on Sat, 05 February 2005 12:02
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Re: Juvenile request
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Re: Juvenile request
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Principle schematic
By: Damir on Sun, 06 February 2005 07:18
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Re: Principle schematic
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Re: Principle schematic
By: Damir on Sun, 06 February 2005 09:33
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Re: Principle schematic
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you don't want to see what *I* thik is complex...
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Re: you don't want to see what *I* thik is complex...
By: cheetah on Sun, 06 February 2005 13:21
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the Poinz...
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Oh baby!!!
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Re: the Poinz...
By: cheetah on Sun, 06 February 2005 19:43
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Re: the Poinz...
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Re: the Poinz...
By: cheetah on Sun, 06 February 2005 20:49
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Re: the Poinz...
By: cheetah on Sun, 06 February 2005 20:50
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Re: the Poinz...
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Re: the Poinz...
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Re: the Poinz...
By: cheetah on Mon, 07 February 2005 05:06
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