AmazonBasics AC Powered Computer Speakers will bring more power to your PC or mobile device, but their lack of bass and flat sound reproduction are big drawbacks. Recommended for only the most ...
It's expensive replacing batteries for devices that don't have an AC adapter socket, but if you've got a little time you can make your own AC-powered "batteries" that will power your device without ...
This is the simple version of a white LED lamp that can be directly powered from mains. It can give ample light even for reading purpose. Capacitor Cx along with diodes D1 through D4 forms the AC step ...
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