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View Full Version : deal alert: SP-320-5 PSU's for $40 + $9.99 shipping (active PFC, variable fan, etc)



tetsuo
12-09-2013, 03:00 PM
I'm not affiliated w/ the seller in any way. I just came across the deal and thought I'd share w/ the community. They're new and the seller has great feedback:
http://www.ebay.com/itm/MEAN-WELL-275W-AC-DC-ENCLOSED-SWITCHING-POWER-SUPPLY-SP-320-5-/171180821435?_trksid=p2054897.l4275

55A @ 5V, auto-switching, active PFC, load-based fan speed (sooo much quieter than the S-600-5's I tried, even with the fans at max speed), etc.

stevech
12-09-2013, 03:06 PM
5V @ 55A.
How many Teensys can that support?

tetsuo
12-09-2013, 03:31 PM
5V @ 55A.
How many Teensys can that support?

Well if you're ONLY powering teensies... um... a metric crap-ton :D If you're also powering WS2812b LEDs, then quite a few! I keep forgetting to order a fuse for my DMM to measure actual current draw on my strips; according to Ray Wu, the WS2812b strips need around 7.2 amps (36W @ 5V) per 5-meter (150LED) strip, but Paul's numbers indicate the current demands are a bit higher. Anyway, about 1000-1100 LED's per PSU.