help about astable circuit and unknown element

Discussion in 'The Projects Forum' started by opampcircuit, Jun 29, 2016.

  1. opampcircuit

    Thread Starter New Member

    Jun 29, 2016
    2
    0
    hello engineers!

    I have a board that is producing a pwm signal.
    in a section we have a astable circuit. an element on the board in this circuit is unknown. (Un element)
    can you detect what is this?
    I measure the capacitance of that is about 160pF.
    what is its role in the circuit?
    how the circuit begins to start?
    View attachment 108428 111.jpg
    IMG_20160628_155856 (2).jpg
     
    Last edited: Jun 29, 2016
  2. AlbertHall

    Well-Known Member

    Jun 4, 2014
    1,956
    387
    You have rather blocked the view of the component with that white box, but it looks like a capacitor. If it reads, out of circuit, very high resistance and 160pF then it is fairly safe to say it is a 160pF capacitor.
     
    opampcircuit likes this.
  3. opampcircuit

    Thread Starter New Member

    Jun 29, 2016
    2
    0
    solved
    it is capacitor К10-17А 150nF
     
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