Solar inverters are generally "modified sine wave" which is only slightly better than a square wave. The RMS voltage will be 120, but the peak voltage will be lower, and lower-cost switching supplies that depend on peak voltage may have a problem.
If the solar power charges a battery, you should be able to get a switching "buck" converter that will drop the DC down to 5v fairly efficiently (as Gerald mentioned). On Mon, Sep 23, 2013 at 10:12 AM, evilwulfie <[email protected]> wrote: > I run my BBB using a 4 dollar chinese power supply 5v 1amp and works > like a charm > i also run my design lab and whole house from solar power and only ever > have issues > when the transfer switch gets switched slowly and the power does a mild > brownout > then the power supply/BBB needs a quick plug/unplug and all is well > > i would suspect you are having some grounding issues > > just a guess > > > On 9/20/2013 2:49 PM, [email protected] wrote: > > The Beagle Bone doesn't work with some power supplies. It appears that > > it is not tolerant of inexpensive power supplies (such as the DLInk). > > We are sure this is not due to lack of amperage as the Beagle Bone > > draws about 350 mA from our lab supply and the power supplies that > > fail are each rated at 1A and 2A. I think it has to do with > > inexpensive switching supplies which are inherently noisy. > > > > Here's where it get's interesting... We found a supply that works in > > the lab, but when installed in the field it the Beagle Bone's power > > light was on, but the heartbeat lights didn't blink and the unit would > > not operate. We thought the supply went bad in the field, so we took > > the Beagle Bone to our local Radio Shack, tried a supply that worked > > in the store and then installed them both back in the field. The new > > supply did not work in the field. > > > > The AC power in the field is supplied by Solar Power and I figured > > this might be the issue. We plugged the new supply and Beagle Bone > > into a commercial (non solar) outlet and it worked fine. > > > > I have to think that the inverter on the Solar Power is injecting > > similar noise as the cheap switching supplies. > > > > Two questions... > > > > 1) Has anyone had issues with the Beagle Bone operating with cheap > > switching supplies or from Solar Power? > > > > 2) If so, any ideas on solutions to clean up the Solar Power source? > > > > > > Thanks in advance, > > > > Jeremy > > > > > > -- > > For more options, visit http://beagleboard.org/discuss > > --- > > You received this message because you are subscribed to the Google > > Groups "BeagleBoard" group. > > To unsubscribe from this group and stop receiving emails from it, send > > an email to [email protected]. > > For more options, visit https://groups.google.com/groups/opt_out. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
