try this:
http://babelfish.altavista.com/
and insert this
www.diyzone.net/sections.php?op=viewarticle&artid=11
(use copy link and paste)
in the translate URL
I think you can get something out of the translation
Pedro Martins
http://babelfish.altavista.com/
and insert this
www.diyzone.net/sections.php?op=viewarticle&artid=11
(use copy link and paste)
in the translate URL
I think you can get something out of the translation
Pedro Martins
Re: How are they tied?
If you look at the picture from post #40 in this thread, you will notice a bar on ea. side (gold color) which is fastened to the heatsink with 4 Allen screws. This bar presses the chips onto the heatsink.
Ricren said:Hi folks,
I noticed that the 3886 amps in the Rowland amp are not screwed to the heatsink. Can anybody thell me how are they fixed?
cheers
Ric
If you look at the picture from post #40 in this thread, you will notice a bar on ea. side (gold color) which is fastened to the heatsink with 4 Allen screws. This bar presses the chips onto the heatsink.
Re: Re: How are they tied?
Ahhhhhh! So the bar was removed to thake the photo on post #42, right?
Very nice, thanks for the information.
cheers
Ric
Peter Daniel said:
If you look at the picture from post #40 in this thread, you will notice a bar on ea. side (gold color) which is fastened to the heatsink with 4 Allen screws. This bar presses the chips onto the heatsink.
Ahhhhhh! So the bar was removed to thake the photo on post #42, right?
Very nice, thanks for the information.
cheers
Ric
Hi,
I think I got the gainclone bug
Digging on the web I saw that the jeff rowland concentra uses some concepts that are mentioned in this forum regarding the gainklones, like the use of LM3886 and battery supply. Taking a look at
http://www.jeffrowland.com/review16b.htm
we can see that:
1 - input is through a tranformer and an AD815
2 - output are 6 x LM3886
TI has an application ("Complete Audio Amplifier") where they use a OPA134 input opamp, that serves to make the treble and bass controls, and then a simple OPA548 (replaceable by the usual suspects).
My question/thoughts are if these more elaborated designs can be better than the gainclone. And if there is a point in converting an unbalanced signal to balanced signal inside the amp to send it to the further stages. And if the transformer is necessary or the input opamp can do it.
Miguel
The mentioned URL is death in the meantime. Who know the currently web address?
P.S.: check out also this threads:
http://www.diyaudio.com/forums/soli...1-schematic-modules-wanted-5.html#post3782041
http://www.diyaudio.com/forums/chip-amps/131275-jeff-rowland-concentra-amplifier.html
http://www.diyaudio.com/forums/chip-amps/16396-bridgeclone-rowland-concentraclone.html
http://www.diyaudio.com/forums/chip...ons-tda7293-tda7294-lm3886-etc-available.html
Last edited:
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