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Old 22nd May 2005, 08:15 AM   #21
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Quote:
Originally posted by fresno Bob
...not what someone else has made already.

Quote:
Originally posted by fresno Bob
...i think i will go with a jung supper regulator ...
???
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Old 22nd May 2005, 09:55 AM   #22
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Quote:
Originally posted by fresno Bob
Well for now i think i will go with a jung supper regulator and toroidal transformer..

I would advise against a toroidal xformer. These are very wideband, meaning that they easily pass anything that is on the mains, like noise, interference, etc. In power amps, you would use toroids because of efficiency reasons and because the signal levels are higher. In preamps, DACs, etc you are better served with an E-I xformer with separate primary & secondary windings to get some good isolation from mains borne junk. The lower efficiency doesn't matter in this case.

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Old 22nd May 2005, 02:10 PM   #23
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Default Thanks, Jan

..for the distinction between toroids and E-I core. I'm working on my ALW boards for pre-amp use.

Regards,
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Old 22nd May 2005, 02:21 PM   #24
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pinkmouse you have not offered any help you do post nothing. since i could not find any thing as for info i'm left with this route for now you dont like it to bad. besides i dont see you posting any of your own power supply design's so back off...

janneman Thanks for the heads up. i have however seen toroids in dacs on my searches.
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Old 22nd May 2005, 02:32 PM   #25
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Quote:
Originally posted by fresno Bob
[snip]janneman Thanks for the heads up. i have however seen toroids in dacs on my searches.

Yeah.
- they're cheaper;
- they look cool to the customer (little does he know);
- not all engineers are aware of these things or care.

Jan Didden

PS I think Pinkmouse is not unreasonable. In a single breath you say that you don't want to built someone else's design, but then you ask us to do your design for you, more or less. Then you say you will built the jung reg, probably the most copied reg on this forum. It IS confusing from where we stand.
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Old 22nd May 2005, 03:47 PM   #26
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janneman I did not ask any of you to Design anything or build anything for me. since i cant seem to get help, and my questions are not welcome here i will not post any more.
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Old 22nd May 2005, 04:39 PM   #27
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Bob, we would help, but we don't know what you want! Can't you see how confusing your posts are?
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Old 22nd May 2005, 04:59 PM   #28
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pinkmouse I'm seekign to build a simple power supply for a dac. i really dont want to use a jung reg. as it seems overly used in builds, dont get me wrong i like the design it's damn simple too. i just wondered if something else could be built. i dont want no one to build me anything i want to learn to build my own designs. any how the powersupply would be split in two one for the digital and one for the analog i do not plan to use tubes this will be op-amp based dac. if thats not enough info pink please let me know exatly what you need to know about what i'm trying to do..
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Old 22nd May 2005, 05:14 PM   #29
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Ok,

1) How much experience of electronics do you have?

2) What voltage/current supplies do you need for the dac?

3) Is it the dac a design of your own, or a kit?

4) When you say simple, how simple?

The main issue with power supplies is that pretty much everything that isn't overly complicated has already been done. That's why I gave you all the references to start with, so you could look through them and see what kind of thing you wanted.
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Old 22nd May 2005, 05:22 PM   #30
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Quote:
Originally posted by fresno Bob
Well for now i think i will go with a jung supper regulator and toroidal transformer..
Quote:
Originally posted by fresno Bob
pinkmouse I'm seekign to build a simple power supply for a dac. i really dont want to use a jung reg. as it seems overly used in builds, dont get me wrong i like the design it's damn simple too. i just
It seems that you can't deside if it's going to be a Jung Super Regulator or not a Jung Super Regulator.

It's hard really to know what you are after because somehow you must have some specifications to start with. Without specifications you (we) don't know what circuits you require.

Really good regulators are not so uncomplicated but an easy regulator may be enough. It depends.

So is the main goal simpleness or is it performance? Maybe you could show us your DAC design or at least which DAC IC you're planning to use.

Bob, what kind of regulator topologies have you considered so far?
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