Re: gEDA-user: buzzing board

[andrewm <andrewm@xxxxxxxxxxxxxxx>]

DJ Delorie wrote:
>> A lot of switching power supplies have a low-current mode where they
>> don't switch at the full rate.
>>     
>
> It's switching at 150KHz (it's normal rate), about 25% duty cycle.
>
> I tried adding a 68 ohm resistor on the 3.3v bus, no change.
>
>
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>
>
>   
So do OLED displays buzz themselves ?


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