| Electronics > Beginners |
| Off the shelf plug packs / wall warts / AC-DC adapters - safety and quality? |
| << < (2/2) |
| helius:
There are some reputable brands, like Delta, Lite-on, and Ault, that you can expect not to fail from inadequate isolation or saturation. But you should consider that in any power brick with a linear regulator, it can short out and let unregulated power to the output. This means that the maximum voltage from a 9V DC regulated supply can actually be 15V, etc. Hopefully your equipment can withstand this without blowing up, and you will remember to test the power supply when something goes wrong instead of blaming something else. This is less of a concern with unregulated DC power bricks, or those that supply AC. |
| rdl:
I use Phihong for low power needs, but there are other reputable brands. No need to pay too much. Here is a Mouser search (USA) to start, but check with your local Mouser or Digi-key to see what's available. https://www.mouser.com/Power/Power-Supplies/Plug-In-AC-Adapters/_/N-brvy9Z1yzvvqxZgjdhub?P=1yzv4u1Z1z0zlbjZ1ysr4miZ1yva230Z1z0zl9bZ1z0zl9aZ1z0zp4n |
| cvanc:
When I'm looking for a higher quality wall-wart I search for ones rated for medical use. I have used Phihong with good results, but I'm sure there are others. |
| james_s:
Some of the products at a former job used LiteOn power bricks. I rescued quite a few of those from the recycle bin and have yet to have one fail. |
| Seekonk:
I buy a lot of this one that is only $1.50 shipped and in a case! I think it is pretty well constructed for the price. If it is fused and grounded, what the heck. Just don't use them anywhere near their rating. Check out this guy DiodesGoneWild on youtube for schematics and inside look of popular models. I heavily mod mine for special purpose and this saves me buying something that would be useless to me. |
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