USB is being implemented as a power connection standard more and more these days. But you don’t always have a computer on hand, so how are you going to power all of your sweet USB devices? How about a high-quality switching "wall wart"? This white AC to DC power supply will do 5V at 1A! These wall chargers work with 100--240VAC inputs.
These have a standard USB ‘A’ connector for the output so you can power your Arduino, Raspberry Pi, etc. through a USB cable. Any device that uses a USB cable for charging or power can be powered with this supply.
Check out our Unregulated Power Supply Tutorial to learn more!
If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Noob - You don't need to reference a datasheet, but you will need to know basic power requirements.
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I don't see a UL (or CE) certified marker on the case. Has any teardown been done to see if the proper safety design features like fuses and isolation of AC components/traces from the output? I love me some cheap supplies, but I value having safe AC adapters (and non-flaming wall sockets) more.
You are correct, it's not marked and I'm still working to verify that it has gone through safety testing. We can't guarantee at this time that it is certified. If you need a certified one right away, please check another vendor. I'm sorry for the inconvenience!
If you don't know if this has even been safety tested, this should not be up for sale. This looks a whole lot like the crap littering the fake markets in China. Eat the loss, throw them away. And dopeslap the person who decided it was OK to call this product "high quality" for me.
yeah, if this isn't ul certified, someone buys this and it burns their house down, there is a very good chance they could take legal action against you. and they would want to, because if this was the cause of the fire, insurance wouldn't pay out. I would take this product down immediately and only once you have verified it's safety, put it back up. or if you figure out it's not safe, someone didn't do their research. many of these are horribly constructed and capable of failing in fiery ways or shocking someone if the isolation fails. You don't want to play with fire here.
There's always this one! Much nicer.
Me too. UL certification is a must for safety. I have seen bad wall-warts self-destruct!
I second that! No UL (or other NRTL) is a deal-breaker for me.
Did someone in the engineering department verify that this module is safe and actually capable of delivering 1A at 5V? Before purchasing bought 250+ of them? I bet not. The lack of UL certification and the price point says a lot...
Yeah, here I always thought "will it burn someone's house down and deny them an insurance payout?" would be one of the things you checked BEFORE sending out handfuls of them in nice red boxes with your name on it.
Is it even legal to sell a non-certified electrical device? It's one thing buying this from Ali Express, but from a reputable North American electronics retailer?
In addition to the whole UL comments - for every PS it would be good to state if the supply is non-isolated ( like an ATX), basic isolation, or double isolated.
Yeah considering how terrifyingly bad the design of some of these are, I'd want a real close-up picture of the CE mark. I mean being SparkFun, I hope y'all just ordered a huge assortment of adapters off AliExpress, took them apart, and found the least shameful one, but still.
This will not work to power the newest versions of the Raspberry Pi. It may work for the earlier editions, but the newer ones with wifi take more power.