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Old 16th May 2012, 03:11 PM   #3521
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Quote:
Originally Posted by tinitus View Post
lets us know how it goes
Sure,I will update here.

Regards,
Sachin
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Old 19th May 2012, 06:20 AM   #3522
gadut is offline gadut  Indonesia
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My first learning on pcb layout, previously I use schematic menu then convert to pcb. It was so frustating for newbie like me. Then I started to design from pcb menu by placing each component 1by1. I never thought that designing pcb will be so much fun by using 3D rendering from diptrace

Need your advise on my layout

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Old 19th May 2012, 06:33 AM   #3523
tinitus is offline tinitus  Europe
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looks great
but might be a bit tedious getting to the jfets, if you should need to do repair or something

appears to me like the jfets would fit nicely into the space at the end of the caps
and according to your copper lines, it would make a natural and shorter connection as well
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Old 19th May 2012, 11:04 AM   #3524
Giobax is offline Giobax  Italy
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Here is my interpretation of B1. Thanks to Nelson Pass and Salas for sharing their great projects.

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Giovanni
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Old 19th May 2012, 11:09 AM   #3525
tinitus is offline tinitus  Europe
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ah, a real beauty
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Old 19th May 2012, 12:00 PM   #3526
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Nice work. I like the use of the extension rod on the volume pot.

What is the purpose of the alluminium u frame between the PSU and the B1 ? It certainly has no screening properties.

GADUT, I simply downloaded the Gerber files from the PassDIY site and used a FREE Gerber viewer to convert them into .jpg images.
Then it was a simple matter of producing them.

I did cheat though. I only etched the bottom copper layer. The upper layer remained intact. After clearance drilling the necessary holes I made the necessary upper tracks with insulated wire - EASY.
Attached Images
File Type: jpg DSIR9331.JPG (177.4 KB, 244 views)
File Type: jpg DSIR9373.JPG (183.3 KB, 249 views)

Last edited by KatieandDad; 19th May 2012 at 12:14 PM.
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Old 19th May 2012, 12:00 PM   #3527
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This is a point to point wiring dc coupled B1 buffer with a stepped attenuator volume switch.
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File Type: jpg IMG_1262.JPG (156.6 KB, 185 views)
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Old 19th May 2012, 12:12 PM   #3528
Giobax is offline Giobax  Italy
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Quote:
Originally Posted by KatieandDad View Post
What is the purpose of the alluminium u frame between the PSU and the B1 ? It certainly has no screening properties.
Hi. Are you referring to the material or to the form of the frame?

Giovanni
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Old 19th May 2012, 12:15 PM   #3529
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I was just wondering why you put a huge alluminium U Frame in the middle of the pre-amplifier.

Other than giving it strength it doesn't do anything.

It does look good though.
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Old 19th May 2012, 12:34 PM   #3530
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Default The original B1 PCB

These are converted from the Original Gerber files which are FREE to download.

many guys have modified them to include different caps. My big Obligattos simply connect though holes in the board to the original pads.

I also cut the 0V trace on the bottom of the board (the thick one between the top and the bottom) as this is already made by the 0V ground plane on the other side of the board.
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File Type: jpg UploadImage 1.jpg (175.1 KB, 255 views)
File Type: jpg UploadImage 2.jpg (174.4 KB, 180 views)

Last edited by KatieandDad; 19th May 2012 at 12:38 PM.
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