biggestsonicfan
Enthusiast
My whole draw to specific Superguns was the ATX PSU compatibility. I've only used one Mean Well and it generates too much noise for my board. Just my personal two cents.
- Thread starter low_budget
- Start date
If you don't mind, can you give me some more details on what specific board and PSU you used, and what type of noise you mean? I would like to be aware of any pitfalls that exist. Mean Wells are specified with fairly low ripple, but if the specific supply is not suited for the load maybe that could be the cause of issues.
Regarding your concern about ATX vs Mean Well though, I'm planning on the solution of using a single high-quality 12V supply and implementing two high frequency (MHz) switching converters on the board to generate the 5V and -5V rails with less than 20mV of ripple and all of the protection circuitry you'd expect from a high quality PSU. They will be rigorously tested before final production to make sure everything is correct and suitable but I wouldn't anticipate any noise issues.
If ATX is a major feature for you that you don't want to see go, I'd take that into consideration.
Edit: There was a glut of low-quality fake Mean Wells for a few years. You should be able to check the serial number to be sure on their website: https://www.meanwell.com/serviceReport.aspx
Edit 2: After discussing with multiple people and given the lack of response I'm going to make the working assumption that user error or some other anomaly was involved in biggestsonicfan's issues and move forward with replacing ATX with a Mean Well supply. ATX supplies are much more notorious for having low quality filtering and poor quality control, and I have heard stories now from people who themselves ran into issues with good power supplies by misusing them due to inexperience.
Regarding your concern about ATX vs Mean Well though, I'm planning on the solution of using a single high-quality 12V supply and implementing two high frequency (MHz) switching converters on the board to generate the 5V and -5V rails with less than 20mV of ripple and all of the protection circuitry you'd expect from a high quality PSU. They will be rigorously tested before final production to make sure everything is correct and suitable but I wouldn't anticipate any noise issues.
If ATX is a major feature for you that you don't want to see go, I'd take that into consideration.
Edit: There was a glut of low-quality fake Mean Wells for a few years. You should be able to check the serial number to be sure on their website: https://www.meanwell.com/serviceReport.aspx
Edit 2: After discussing with multiple people and given the lack of response I'm going to make the working assumption that user error or some other anomaly was involved in biggestsonicfan's issues and move forward with replacing ATX with a Mean Well supply. ATX supplies are much more notorious for having low quality filtering and poor quality control, and I have heard stories now from people who themselves ran into issues with good power supplies by misusing them due to inexperience.
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Somewhat redoing the design again because I'm migrating to a new CAD program and I am moving to a single 12V supply with onboard regulators. I plan on selling Mean Well GST60A12-P1IR as well as a good quality lower-cost Chinese PSU from Alibaba as options. I am interested in offering the lower-cost PSU because based on my knowledge, the regulation of the 12V rail for JAMMA is less-critical and I'll be doing my own high-quality regulation of +5V and -5V. So for some people, the added cost of the Mean Well ($15 vs $5, so $10 extra) may not be justified.
Open to feedback, as always.
Open to feedback, as always.
biggestsonicfan
Enthusiast
I did not see this reply initially. I pulled out the supply to check and there is no serial. Guess it's fake.
obitus1990
Enthusiast
I’d leave the ATX connector on it. If you don’t want to use an ATX PSU, a high quality PicoPSU from
Mini-box can be used. I’ve used it on my parsec for several years without issue.
Mini-box can be used. I’ve used it on my parsec for several years without issue.
For the record, do you remember where that power supply came from? Maybe add a picture too. Others may unwittingly be using similar fakes.
I've already decided to go forward with the single-rail supply, FWIW. It will reduce total purchasing cost and eliminate the variable of poor-quality ATX PSUs. If the end result is unsatisfactory in testing I'll go back to ATX, but I am optimistic.