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D-Noizator: a magic active noise canceller to retrofit & upgrade any 317-based V.Reg.
D-Noizator: a magic active noise canceller to retrofit & upgrade any 317-based V.Reg.
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Old 16th March 2020, 02:01 PM   #641
carlmart is offline carlmart  Brazil
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Today I got this LM317 compact kit ad that could be easily integrated with a Denoizator or Dienoiser:

lm317 dc-dc 1.5a 1.2-37v adjustable power supply board dc converter buck step down module adjustable linear voltage regulator Sale - Banggood.com
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Old 16th March 2020, 02:08 PM   #642
gerhard is offline gerhard  Germany
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Which circuit is the canonical solution for the LM317?
I have some space left over on a proto board, but layout
must happen $(NOW). fab will be started today.

cheers, Gerhard
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Old 16th March 2020, 05:43 PM   #643
Elvee is offline Elvee  Belgium
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Quote:
Originally Posted by gerhard View Post
Which circuit is the canonical solution for the LM317?
This one:
Click the image to open in full size.]
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Old 16th March 2020, 07:30 PM   #644
gerhard is offline gerhard  Germany
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thanks!
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Old 17th March 2020, 01:57 AM   #645
gerhard is offline gerhard  Germany
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... but it will take some time until I can test it.
Attached Images
File Type: png Bildschirmfoto vom 2020-03-17 02-39-51.png (81.6 KB, 537 views)
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Old 24th March 2020, 01:31 PM   #646
carlmart is offline carlmart  Brazil
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Quote:
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... but it will take some time until I can test it.
Questions:

1) What program did you use?

2) Why traces are so thin? It seems to me you can easily make them 4 times wider, making them more soldering resistant and lower their resistance.
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Old 24th March 2020, 01:34 PM   #647
carlmart is offline carlmart  Brazil
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Does anyone have an LTSpice model for 7XXX fixed voltages to sim Diego's Dienoisator for them?
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Old 24th March 2020, 01:48 PM   #648
gerhard is offline gerhard  Germany
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1.) Altium Designer

2.) This is just a test circuit without the intent to run large currents.
It can be used with the Altium snippet feature as a building block
for larger projects and then needs some massage anyway.
Just SMD layout default parameters.
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Old 24th March 2020, 01:51 PM   #649
dotneck335 is offline dotneck335  United States
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Originally Posted by carlmart View Post
Does anyone have an LTSpice model for 7XXX fixed voltages to sim Diego's Dienoisator for them?
Those regulators have NO adjustment pin---only In, Ground, Out. There's NO place to inject the feedback signal.....?????

Last edited by dotneck335; 24th March 2020 at 01:54 PM.
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Old 26th March 2020, 10:13 AM   #650
zenmastering is offline zenmastering  Canada
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See post 409/410 on page #41

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Originally Posted by dotneck335 View Post
Those regulators have NO adjustment pin---only In, Ground, Out. There's NO place to inject the feedback signal.....?????
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