Am Mon, 04 Feb 2019 06:16:17 +0000 schrieb A. Dumas:

> A. Dumas wrote:
>> Just believe what it says. You need either a:
>> - power supply with higher voltage - better quality power supply with
>> more constant voltage - shorter usb power wire - thicker usb power wire
>
> I forgot:
> - higher rated power supply that isn't near its limits at a current of
> ~1 A.
>
> But the most likely reason by far is the quality of the power supply,
> where quality means constant voltage for any current draw in the rated
> range. Unfortunately commodity parts like usb power supplies don't come
> with datasheets where you could see a response graph. It's all a bit hit
> & miss,
> unless you go for "the official power supply". Btw, I never heard of the
> 1 or Zero having this trouble, maybe sometimes a 2 and a very shit power
> adapter, but it got big with the 3.

Hi,

sure, you're right -- just tested also with a very small PSU just for fun
since this one delivered 5.5 V open circuit. RPi3 ran fine and throttled
was 0x0. But as soon as a more power consuming command like iwlist was
executed, RPi was somehow "switched off"...

Well, since it is hard to find a PSU with exactly 5.2 .. 5.3 Volts to
make RPi3 happy -- what about using a normal stable 7.5 Volts power
supply?

Will this make the power regulator melt down?

Best regards,

Markus


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