Particular recommendations for a 220>12V 10A power supply? - Page 1
Forum section: electronics / general

author: Balaur
author_rank: Unknown
timestamp: April 17, 2013, 02:30:24 pm
content: Dear all,I would need a good quality brick/lump power supply able to deliver 12V/10A. There are many units available on eBay, but I would really like to hear your informed opinion and recommendations.I had some issues in the past with units that were supposed to be good-quality:- very optimistic specs in terms of delivered power- lack of regulation- low efficiency + heat- high stand-by power- flimsy cables, extremely underrated for the specified amperage- three or four failuresEven if somewhat beyond immediate needs, my personal preference would go towards something likethisbut the WAF (Wife Acceptance Factor) is rather low (too industrial) )A power brick could be nice and there are some on Ebay, but there is no datasheet, they look poorly-made and the output cable is rather undersized.Your help is much appreciated, thanks!

author: mariush
author_rank: Super Contributor
timestamp: April 17, 2013, 02:42:20 pm
content: Get a Seasonic G-360 computer power supply:http://www.amazon.com/Seasonic-80PLUS-ATX12V-Supply-SSR-360GP/dp/B008XEYT5M/ref=sr_1_1?ie=UTF8&qid=1366209527&sr=8-1&keywords=seasonic+g-360Solid power supply manufacturer with great reputation, quality construction, dc-dc conversion for 3.3v and 5v so it doesn't matter if you don't use those and the whole 360w are available on 12v, the fan will barely spin with low load, tight regulation (about 20-40mV ripple)You can just cut the atx connector and leave just the two wires that when shorted power on the power supply, and you can connect some banana plugs/connectors on the case if you want or at the end of the cables the power supply comes with.

author: Fsck
author_rank: Super Contributor
timestamp: April 17, 2013, 02:51:13 pm
content: Bigger question would be what you're powering.

author: Balaur
author_rank: Unknown
timestamp: April 17, 2013, 03:01:23 pm
content: Quote from: mariush on April 17, 2013, 02:42:20 pmThank you for your suggestion, but no. Its WAF is even lower than the one I've linked. Plus, it will collect too much dust.Quote from: mariush on April 17, 2013, 02:42:20 pmBananas? What is this, 1924?I'm more a PowerPole man.

author: peter.mitchell
author_rank: Super Contributor
timestamp: April 17, 2013, 03:09:23 pm
content: Keep an eye out for Xbox 360 Power Supplies, they're pretty nice, 12v 12-16A depending on model, 5V 1A, got a fan, and has a standby mode, nice "powerbrick" design (no grey/silver metal boxes), takes IEC C18/C17/C14/C13 leads, may be isolated (depending on model).

author: mariush
author_rank: Super Contributor
timestamp: April 17, 2013, 03:11:36 pm
content: The G-360 is 30A 12v and is gold efficiency, so dissipates little heat at low loads. At peaks of 10A at 12v, you could probably disable the fans and cover the vent holes where the fans are and the psu will still run just fine.It's no dust issue. Besides, the one you linked to also has a fan, it's a smaller diameter fan so more noisy, and will probably get dusty much faster, so I don't get why the dust is more of an issue with that Seasonic and less with the other one.There's also no reason why you shouldn't be able to extract the pcb board and insert it into some prettier case, the board is not that tall and doesn't require much cooling. Basically, at 60$ vs that $120 you linked to, it's a no-brainer. Make your own case out of wood or some plastic and prettify it for your wife if she complains.Otherwise WAF is very subjective. We could go on and on giving you good suggestions and you dropping them down. Do your own research then and stop asking then...And I said bananas SLASH connectors .. that includes PowerPole.

author: Balaur
author_rank: Unknown
timestamp: April 17, 2013, 03:14:13 pm
content: Quote from: Fsck on April 17, 2013, 02:51:13 pmNothing too fancy actually. Domestic stuff really.- My Internet/Phone modem and the associated TV box: ~60-75W- A backup NAS that is awaken whenever needed: ~10W- The LED Chaser lights for our Christmas tree: ~10W- Ambiance lighting for the terrace: ~ 5WAll that stuff doesn't mind sharing a common ground.The Internet/TV boxes power bricks are particularly awful: big, low efficiency (plus the associated heat).Best regards,Dan

author: Balaur
author_rank: Unknown
timestamp: April 17, 2013, 03:16:01 pm
content: Quote from: peter.mitchell on April 17, 2013, 03:09:23 pmThat is an excellent suggestion. Thank you!And I can really use the 5V.Best regards,Dan

author: Balaur
author_rank: Unknown
timestamp: April 17, 2013, 03:16:51 pm
content: Quote from: mariush on April 17, 2013, 03:11:36 pmThank you for your suggestions. Much appreciated.Multumesc frumos!

author: David_AVD
author_rank: Super Contributor
timestamp: April 17, 2013, 10:27:13 pm
content: Mean Well make reliable power supplies in all sorts of packaging. Beware of fake "MW" units though.

author: ftransform
author_rank: Frequent Contributor
timestamp: April 18, 2013, 01:43:14 am
content: Quote from: Balaur on April 17, 2013, 03:14:13 pmHave you done any calculations to see how much money you are saving by doing this?This is actually a very neat idea and it would help the wall wart spam I have. It is alot of work though, especially if I want to modify an appliance by bypassing its internal PSU.