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OLDO - Open source power supply modules
OLDO - Open source power supply modules
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Old 28th June 2017, 08:39 PM   #11
ammel68 is offline ammel68  United States
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OLDO - Open source power supply modules
Can you go ahead and solder the voltage set resistors on this board if I purchase one? I would like 12VDC outputs.

LT3042 DUAL power supply DAC preamplifier headphone amplifier

Thanks.
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Old 29th June 2017, 01:26 PM   #12
themystical is offline themystical  United Kingdom
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Quote:
Originally Posted by themystical View Post
I wonder if somebody could advise what is the best way of outputting 1.2V say 400mA from the LT3045 module? Is there a neater way than adding a second in series LDO? Preferably one would want to retain the low noise output of the LT3045? The new ESS dac chips require 1.2V.


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Sorry must have been having a bad day! Output voltage can be anywhere between 0 and 15V no problem.OLDO - Open source power supply modules


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Old 30th June 2017, 06:21 AM   #13
mravlca is offline mravlca  Slovenia
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Quote:
Originally Posted by Nico Ras View Post
If I understand the PCB then the 4th and 5th PCB has voltage selection thus 0.8 + 0.4 should give you 1.2VDC. Is my assumption correct
Minimum output voltage is 1.4V which is also the refference.

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Originally Posted by ammel68 View Post
Can you go ahead and solder the voltage set resistors on this board if I purchase one? I would like 12VDC outputs.

LT3042 DUAL power supply DAC preamplifier headphone amplifier

Thanks.
Yes, I can. I think that is also said in the ebay add.

Best Regards,
Aleš
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Old 30th June 2017, 05:11 PM   #14
ammel68 is offline ammel68  United States
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OLDO - Open source power supply modules
Quote:
Originally Posted by mravlca View Post
Yes, I can. I think that is also said in the ebay add.
The way you word it in the Ebay ad is why I was confused.
"Output voltages are set with 0805 resistor (in package are resistors included for 3.3V, 5V, 12V)"
This sounds as if various resistors are included with the board so people can select and solder the one they require.
No problem...I read more into it than needed.

Thank you for your reply.
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Old 2nd July 2017, 09:27 AM   #15
mravlca is offline mravlca  Slovenia
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Quote:
Originally Posted by ammel68 View Post
The way you word it in the Ebay ad is why I was confused.
"Output voltages are set with 0805 resistor (in package are resistors included for 3.3V, 5V, 12V)"
This sounds as if various resistors are included with the board so people can select and solder the one they require.
No problem...I read more into it than needed.

Thank you for your reply.
Hi, thank you for your feedback. I have to admit, but you're right. It is not clearly stated buyer can get configured PCB. I will fix that.

BR,
Aleš
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Old 4th July 2017, 01:49 AM   #16
ammel68 is offline ammel68  United States
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OLDO - Open source power supply modules
Quote:
Originally Posted by mravlca View Post
Hi, thank you for your feedback. I have to admit, but you're right.
You're welcome.
I admit that sometimes even simple things can confuse me and I'm just not able "to see the forest for all the trees".
I look forward to receiving and trying your LT3042 dual supply.
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Old 10th July 2017, 07:26 AM   #17
mabu0815 is offline mabu0815  Germany
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Hi,

Could you please post the BOM for the motherboard RMP here?

Regards

mabu
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Old 11th July 2017, 09:47 PM   #18
mravlca is offline mravlca  Slovenia
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Originally Posted by mabu0815 View Post
Hi,

Could you please post the BOM for the motherboard RMP here?

Regards

mabu
Hi Mabu,

please find attached BOM for RMP motherboard.

Regards,
Aleš
Attached Files
File Type: zip mother_size_A_RMP_BOM.zip (8.3 KB, 48 views)
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Old 13th July 2017, 05:08 AM   #19
ammel68 is offline ammel68  United States
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OLDO - Open source power supply modules
Quote:
Originally Posted by ammel68 View Post
I look forward to receiving and trying your LT3042 dual supply.
I received my LT3042 dual supply board a few days ago.
The PCB layout and the soldering of all the SMD's were all first-rate.
After soldering the few thru-hole components included with the board, it worked the first time without any issues whatsoever.

Plus...I didn't have to wait 2 or 3 weeks to receive the board and components like you do with most Chinese sellers.

I hope I can try the LT3045 in the near future if you offer a dual version on Ebay like you did for the '3042.
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Old 19th July 2017, 06:30 PM   #20
wushuliu is offline wushuliu  United States
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Is an unregulated wallwart okay for dc power supply fot the 3045?
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