Coil whine with UDOO Bolt V8?

Discussion in 'UDOO BOLT' started by papa4narchia, Aug 28, 2019.

  1. PackElend

    PackElend UDOOer

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    ok, what does it actually do, increase the capacity or inductivity of ?, so the frequency is shifted to somewhere we don't here?
    Changing some other electrical propertie to avoid to osicate at such frequency?
     
  2. NickGR

    NickGR UDOOer

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    some switching power supply inside the bolt does not have enough load and the frequency/duty cycle makes the coil resonate into the audible spectrum, probably
     
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  3. NickGR

    NickGR UDOOer

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    hence also why the noise was changing along the blinking LED program that came with the arduino as a test
     
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  4. PackElend

    PackElend UDOOer

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    I opened a ticket, would appreciate some statement of udoo on this
     
  5. salimedwardo

    salimedwardo New Member

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    this type of switching regulators typically runs in the frequency range of 15 KHz all the way up to 100 KHz. I am not sure exactly the type used in BOLT, but I suspect the OP's hearing is extra sharp to be able to sensitive to the ultrasound range.
     
  6. PackElend

    PackElend UDOOer

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    for feature reference, ticket.udoo.org: Coil whine with UDOO Bolt V8 #971369
     

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