My Aleph-X compact PCB

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#41
It’s hard to work out with no scale (to lazy to attempt scaling it); some of the “tracks” look a bit close together. For example look under the four pin header pin 3, V+ and V- look very very close but it could just be due to the image being a picture format online.

As you have coped so well with my pedantic-ness so far let me make another wild suggestion, Being limited in board size for the main Amp board have you considered going SMT ? you would as far as I know be the first DIY Aleph X in SMT.
 
#42
Hi all,


steenoe said:
Hi Bruno, here is a rectifierboard that's known to work🙂 Just for inspiration😉 http://www.diyaudio.com/forums/showthread.php?s=&threadid=42105&highlight=
Your A-X boards are looking great😎

Steen🙂
Click to expand...

Well, I knew that board already, and it looks really great. There are a couple of things about it which do not convince me completely, though:
1. The heatsinks overlap the top layer. As was pointed out previously in this thread, the solder mask cannot be relied upon as insulator.
2. The board cannot easily accommodate both the TO-220 and the TO-247 package, and I wanted this kind of flexibility.

As I said, that board looks great, though, nice and compact.

mark stones said:
It’s hard to work out with no scale (to lazy to attempt scaling it); some of the “tracks” look a bit close together. For example look under the four pin header pin 3, V+ and V- look very very close but it could just be due to the image being a picture format online.

As you have coped so well with my pedantic-ness so far let me make another wild suggestion, Being limited in board size for the main Amp board have you considered going SMT ? you would as far as I know be the first DIY Aleph X in SMT.
Click to expand...

Actually I believe you're right concerning the insulation distance between V+ and V-, I will correct it.

As for the SMT, well... it' s just me, but I really hate them when it comes to solder them!

Cheers,

Bruno
 
#44
Rectifier board Version 2

Hi all,

I redesigned the rectifier board and made it more compact (3.1" x 2.2"). What do you ¨think?


mark stones said:



Send me four boards and I would send you two back soldered up:devilr:
Click to expand...

😀 Would you get the boards if they aren' t SMT?😀

Cheers,

Bruno
 

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#50
Sorry off topic , but would you share a little bit about the little wonder ?
Click to expand...
Sure, Jurgen, but could you please post your question in the NS10 thread? Just so it is easy to do a search😉 I can tell you , the "little wonder" as I doped it, really is great, even with average components!😉 You can safely build one for yourself😉

Steen😎
 
#51
Re: Rectifier board Version 2

Carondimonio said:
Hi all,

I redesigned the rectifier board and made it more compact (3.1" x 2.2"). What do you ¨think?
Click to expand...
Its much better, the tracks around the heatsinks could be a bit thin you could fill them (under the heatsink)and then use an insulator between the heat sink and the diode(I know this goes against what I said before but you had multiple traces under them on the other board). So even with insulators it was possible to short tracks.



Carondimonio said:
😀 Would you get the boards if they aren' t SMT?😀
Click to expand...
Yes I would if you make then available, I threw in the smt suggestion because I like reading the replies that quickly follow when you use this abbreviation, it may not be long before it gets listed as a swear word and banned from the forum. Ha (sorry guys and girls):devilr:
 
#52
Re: Re: Rectifier board Version 2

Hi all,

mark stones said:

Its much better, the tracks around the heatsinks could be a bit thin you could fill them (under the heatsink)and then use an insulator between the heat sink and the diode(I know this goes against what I said before but you had multiple traces under them on the other board). So even with insulators it was possible to short tracks.
Click to expand...

well, I' ve looked into the datasheets and found out that this heatsink can come already fitted with teflon insulators, which raise it apprx. 1.5 - 2 mm above the PCB, so... here' s the new version of the regulator PCB.

Cheers,

Bruno
 

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  • rectifier2.gif
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#57
Some minor changes...

Hi all!

well, it' s nice to see such a positive response! Thank you all, guys!🙂 🙂 🙂

Ok, I made a couple of minor changes:
added two additional input pins (-INDC and +INDC), in case the input caps are not installed.

I also changed the heatsink package and used the insulated one (like on the rectifier PCB), to thicken the supply lines.
 

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  • alephxv5-1.gif
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#60
Carondimonio said:
On the rectifier PCB, I added pads for 1N400X diodes. They won' t be used for an AlephX, but can be used for other projects (for example, an ONO... hint, hint... 😀 ):

Cheers,

Bruno
Click to expand...

If you are planning to have the ident printed on the boards cut it back around the solder lands.
 
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