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Old 18th July 2012, 06:41 PM   #101
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Wima Black Box are MKP10 made for OEM use in the Far East, at least that is what I read. I did not recognize them at first but syklab already answered it are Black Box types.
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Old 18th July 2012, 06:45 PM   #102
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Yes, I noticed later that there was another page to read
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Old 18th July 2012, 06:46 PM   #103
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How is your build coming along Massimo ?
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Old 18th July 2012, 06:53 PM   #104
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Like you, I didn't receive the pcbs yet.... grrrr
And I would like to see your PS and BOM before placing an order for the components I need.
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Old 18th July 2012, 06:59 PM   #105
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You are asking the wrong guy. But it is a somewhat polished standard text book LM723 design with PNP pass transistor. Nothing fancy but very good, we focussed on quality not fashion. Not many LDO's can match it I guess.

Got caught up in more important things but Subbu has the final design and he is busy testing it for you guys/girls.
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Old 18th July 2012, 07:23 PM   #106
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Do you have by any chance a part # for the Xrfm and the PNP pass bjt?
Are you going to use TH or SMD parts in the PS?
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Old 18th July 2012, 07:36 PM   #107
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You want too much Massimo It uses both TH and SMD. It uses an EI30 transformer but we are having a hard time sourcing them in 115 V and 230 V versions with the same footprint and secondary voltage.

A BD140 will do. 2 x 1000 F 25 V too but we should wait till they have been tested and things may still change.
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Old 18th July 2012, 08:08 PM   #108
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Jean-paul do you know how much current the es9023 dac needs? I cant find any info about it (planning to build a Salas v1.0)
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Old 18th July 2012, 08:17 PM   #109
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OK, plenty of BD140 TFK NOS

Which EI30? How many VA? 6 or 9V AC? Single or dual sec? gimme the specs you're looking for and I might help you.
Generally print Xfrms they are quite standardized and Era, Hann and Block, just to mention some good ones, are interchangeable.
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Old 18th July 2012, 08:22 PM   #110
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Quote:
Originally Posted by skouliki View Post
Jean-paul do you know how much current the es9023 dac needs? I cant find any info about it (planning to build a Salas v1.0)
The first revision takes about 50 to 70 mA depending on which oscillator you use. I am really curious if a shunt supply will improve matters as the onboard regs do most work. I guess it won't do much in this application but please keep me informed if it turns out to be a better solution. It would be different if there wouldn't be onboard regs but I strongly advise to keep those as the tracks to the points they feed are short and well decoupled. It would not surprise me if added wiring would be detrimental, I am pretty sure it will be. I use Salas shunt regs in the DCB1 so I know their quality. However this is a device that carries higher frequencies so I would advise to use a shunt supply just for the 5 V if you want to use one.
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