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My ES9038Q2M DAC board
My ES9038Q2M DAC board
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Old 30th September 2018, 04:06 AM   #71
Markw4 is online now Markw4  United States
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Fast start up mod for LT3042: ES9038Q2M Board - Page 154 - diyAudio
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Old 30th September 2018, 07:44 AM   #72
Nanoloop is offline Nanoloop  Hong Kong
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If that's a 3042 and not the larger 3045, then props to you! That's some very delicate and difficult skills - well done. I find perfectly proportioned gobs of solder to be strangely delightful :-) I can manage the 3045 on a separate PCB but I know my skills aren't up to the 3042 in it's crowded location on this DAC. I did it to convert a 3.3V to 12V with 22uF Cset. Without fast start up, it takes seconds.
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Old 30th September 2018, 08:03 AM   #73
Markw4 is online now Markw4  United States
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It's an LT3042. See part numbers on the chip and on the board. That's the branding code on the chip for a '42.

It always surprises me some of the stuff that is actually doable by hand. Yet, somehow it works out.
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File Type: jpg Branding Codes.jpg (234.3 KB, 53 views)

Last edited by Markw4; 30th September 2018 at 08:07 AM.
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Old 30th September 2018, 08:19 AM   #74
Nanoloop is offline Nanoloop  Hong Kong
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Quote:
Originally Posted by Markw4 View Post
It's an LT3042. See part numbers on the chip and on the board. That's the branding code on the chip for a '42.

It always surprises me some of the stuff that is actually doable by hand. Yet, somehow it works out.

Sure, it works... for you! :-) I don't care to think of all the gear I've trashed because my ego exceeded my skills.

Last edited by Nanoloop; 30th September 2018 at 08:21 AM.
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Old 30th September 2018, 04:22 PM   #75
democles is online now democles  Netherlands
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Thank you ,Nanoloop,fore all the efford of tweaking this board


When I finish my GU-50 monoblock project with bias automation,I wil go on with this dac.


The thing that is not clear for me, is how you fixed the op amp power supply?


On my board there is no LM317 fore the digital supply.

Last edited by democles; 30th September 2018 at 04:27 PM.
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Old 30th September 2018, 06:02 PM   #76
democles is online now democles  Netherlands
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GU-50 project almost finished


GU-50 Monoblokken - Pagina 23 - forum.zelfbouwaudio.nl
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Old 1st October 2018, 01:56 PM   #77
Hugh Jazz is offline Hugh Jazz  Taiwan
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It looks like Nanoloop followed thisUsing 3-pin regulators off-piste: part 1
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