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Shonen · 03.06.2011, 01:49 AM

cheap AC adapters tend to output well over their rated voltage unless they are loaded significantly. One of my cheap 5v adapters throws out well over 7v open circuit...I would not trust that as is, use a regulator. An LM7806 at the adapter output should do the trick, unless you're pulling over an amp continuous testing things.

I use several modded pc power supplies for my projects, the 5v out rail is perfect for servo testing. If you have HV servos, you can get 7v from using the 12v rail and 5v rail. PSUs have protection circuitry so I would trust them more than an uber cheap wall wart. (:

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Shonen RC-Monster Carbon Fiber Offline Posts: 130 Join Date: Feb 2010 Location: Hilo, Hawaii	03.06.2011, 01:49 AM cheap AC adapters tend to output well over their rated voltage unless they are loaded significantly. One of my cheap 5v adapters throws out well over 7v open circuit...I would not trust that as is, use a regulator. An LM7806 at the adapter output should do the trick, unless you're pulling over an amp continuous testing things. I use several modded pc power supplies for my projects, the 5v out rail is perfect for servo testing. If you have HV servos, you can get 7v from using the 12v rail and 5v rail. PSUs have protection circuitry so I would trust them more than an uber cheap wall wart. (: