Linear regulator PCB (LM317, LT1085, LM338, LT1083) - diyAudio
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Old 20th April 2014, 11:53 AM   #1
mravlca is offline mravlca  Slovenia
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Default Linear regulator PCB (LM317, LT1085, LM338, LT1083)

Hey folks!

This is GB for linear regulator PCB. Standard linear regulators can be used such as LM317 and all others that have same pinout. You can use it as preregulator, regulator for your gainclone, preamp, tube heater etc... PCBs would be in black with gold plated holes. PCB size is 50mmx50mm and can accept TO-220 and also TO-3P regulator package. I've made something similar in the past but the PCBs weren't so nice as they would be now in black color, also configuration for symmetrical PSU is now simpler to configure it.
Cost for one PCB would be 2€ and priority shipping(worldwide) would be 2€ for up to 5pcs, I will also post other shipping rates. Add your ID and qty require as indicated.

mravlca X5
Attached Images
File Type: jpg scheme.JPG (38.7 KB, 619 views)
File Type: jpg PCB.JPG (99.1 KB, 615 views)
File Type: jpg LM_LT_top_black_edition.jpg (220.1 KB, 601 views)
File Type: jpg LM_LT_bottom_black_edition.jpg (145.1 KB, 579 views)

Last edited by mravlca; 20th April 2014 at 08:57 PM.
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Old 27th April 2014, 11:02 AM   #2
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You don't seem to have any means of physically mounting these PCBs, I can't see any holes for stand-offs or is the intention to hang it off the regulator device pins, if so I don't think that is a good way of going about it.

Ray
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Old 2nd May 2014, 05:03 PM   #3
mravlca is offline mravlca  Slovenia
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Quote:
Originally Posted by nautibuoy View Post
You don't seem to have any means of physically mounting these PCBs, I can't see any holes for stand-offs or is the intention to hang it off the regulator device pins, if so I don't think that is a good way of going about it.

Ray
Hi Ray,

yes, I could add some mounting holes to the PCB, many times only small heatsink is needed and therefore is much easier to install this PCB.
But currently as I see it, it is not much interest in this PCB, so I doubt that I will go into production, maybe with cheaper option (green PCB, HASL and lower quantity).

Best Regards,
Ales
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Old 26th May 2014, 07:21 PM   #4
mravlca is offline mravlca  Slovenia
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Quote:
Originally Posted by nautibuoy View Post
You don't seem to have any means of physically mounting these PCBs, I can't see any holes for stand-offs or is the intention to hang it off the regulator device pins, if so I don't think that is a good way of going about it.

Ray
Ok. So after a while I took some time and modified the PCB in a way that mounting holes are present. I have also reduced diameter of filter capacitor from 35mm down to 30mm, which is still big enough for most of 10.000uF/63V capacitors.

Regards,
Ales
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File Type: jpg LM_LT_standoff.JPG (97.2 KB, 348 views)
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Old 4th June 2014, 07:25 AM   #5
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I would be interested in 4 of these boards thanks.
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Old 4th June 2014, 03:21 PM   #6
mravlca is offline mravlca  Slovenia
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Hi niss_man!

I ordered some PCBs but because there is lack of interest I ordered standard production, without gold plated holes but still in black color. Also I made a few more changes* to the board. When they will arrive I will let you know.

*I added 2.54mm pitch header for xh connectors or to put it in breadboard. If someone will use multiple boards for different voltages, then you can make a note on the white square indicating which voltage you have set. Also there is better via clearance from the edge of the board.

Best Regards,
Ales
Attached Images
File Type: jpg LT_LX_top_up.jpg (217.8 KB, 104 views)
File Type: jpg LT_LX_bottom_up.jpg (136.2 KB, 88 views)
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Old 4th June 2014, 09:41 PM   #7
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All good Ales.

Simon
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Old 9th July 2014, 06:49 PM   #8
mravlca is offline mravlca  Slovenia
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Arrow PCBs arrived

So first batch of PCBs have arrived. I still need to test if they work, hopefully that will be done by the end of the week. Also I will try to post pictures how to connect everything and varieties of use. Also all shipped PCBs will be packed in vacuum bags as can be seen on picture.

BR,
Ales
Attached Images
File Type: jpg LT1085 (1).JPG (411.0 KB, 90 views)
File Type: jpg LT1085 (2).JPG (380.5 KB, 91 views)
File Type: jpg LT1085 (3).JPG (431.1 KB, 62 views)
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Old 11th July 2014, 01:25 PM   #9
mravlca is offline mravlca  Slovenia
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PCBs are tested and working as expected. So anyone interested PM or write here in the thread.

BR,
Ales
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Old 12th July 2014, 11:37 AM   #10
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Payment sent Ales.
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