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Linear regulator PCB (LM317, LT1085, LM338, LT1083)
Linear regulator PCB (LM317, LT1085, LM338, LT1083)
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Old 21st July 2014, 06:02 AM   #11
Siankovic is offline Siankovic  Denmark
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Hi, very nice looking nice boards. Did the capacitor clearance end out being 30 mm?
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Old 21st July 2014, 06:30 AM   #12
mravlca is offline mravlca  Slovenia
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Quote:
Originally Posted by Siankovic View Post
Hi, very nice looking nice boards. Did the capacitor clearance end out being 30 mm?
Thank you and yes the big capacitor has 30mm diameter.

Best Regards,
Ales
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Old 21st July 2014, 11:49 AM   #13
Siankovic is offline Siankovic  Denmark
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Damn, all four 10.000 F types I have in stock are 35 mm.

Too bad....
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Old 22nd July 2014, 06:39 PM   #14
mravlca is offline mravlca  Slovenia
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You can still use them, it's just that the cap won't be all the way down to the PCB.

BR
Ales
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Old 30th July 2014, 09:12 AM   #15
mravlca is offline mravlca  Slovenia
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Although circuit is quite simple, here is schematic with values.

BR,
Ales

p.s. I still have some board left.
Attached Files
File Type: pdf Liner_regulator_scheme_LM_LT_x.pdf (12.5 KB, 534 views)
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Old 31st July 2014, 11:20 PM   #16
niss_man is offline niss_man  Australia
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Boards arrived today. Very well packed.

Thank you
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Old 5th August 2014, 08:44 PM   #17
johnnygrace is offline johnnygrace  United States
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Quote:
Originally Posted by mravlca View Post
PCBs are tested and working as expected. So anyone interested PM or write here in the thread.

BR,
Ales
I saw on your blog that you are using the TI TPA chips a lot. Have you placed this regulator after an SMPS for comparison to just using power directly from SMPS or transformer? Not sure if that is your intention or one of them at least but wondering what it might add to my build....
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Old 6th August 2014, 06:39 AM   #18
mravlca is offline mravlca  Slovenia
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Quote:
Originally Posted by johnnygrace View Post
I saw on your blog that you are using the TI TPA chips a lot. Have you placed this regulator after an SMPS for comparison to just using power directly from SMPS or transformer? Not sure if that is your intention or one of them at least but wondering what it might add to my build....
Hi!

I am powering this regulator directly from transformer. I haven't made any comparison when this PCB is powered from SMPS or transformer. Though SMPS has much bigger noise than linear regulators. Meanwell power supplies have usually 150mV noise on 24V output.

Best Regards,
Ales
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Old 9th August 2014, 03:03 PM   #19
mravlca is offline mravlca  Slovenia
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Since this GB isn't going as planed, I've put this PCBs on ebay if someone is more comfortable to buy it from there.
Low Noise Power Supply PCB for LT1083 LT1084 LT1085 LM317 LM338 1pcs TPA3116 | eBay

BR,
Ales
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Old 15th August 2014, 03:48 AM   #20
johnnygrace is offline johnnygrace  United States
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Quote:
Originally Posted by mravlca View Post
Since this GB isn't going as planed, I've put this PCBs on ebay if someone is more comfortable to buy it from there.
Low Noise Power Supply PCB for LT1083 LT1084 LT1085 LM317 LM338 1pcs TPA3116 | eBay

BR,
Ales
Hey mravlca,
Im trying to understand power supplies and am interested in building one as a project and im sure a question like this could have many answers but what makes your pcb a "low noise power supply." As well how might it compare to other power supplies which seem to use far more components and are more expensive. Im interested in a low noise somewhat hi quality power supply but i guess what im getting at is, if you were to tell me one power supply which cost $30 to build was 99.9% as good as one which cost $125, well i would say the .01% loss in quality is acceptable. On the other hand if it was only 80% as good as the more expensive power supply i might feel spending the extra money was worth it. Im looking at building a power supply in lieu of a cheap SMPS im currently using so looking for an upgrade and not just to build something comparable to my SMPS. Note i make no judgements about your pcb, in fact i really like how simple and straightforward it seems, but im interested in whether your aim was simplicity over absolute quality or quality and simplicity.
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