Anyone know what this is?

Discussion in 'General Electronics Chat' started by bdiddie, Sep 12, 2010.

  1. bdiddie

    Thread Starter New Member

    Sep 7, 2010
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    I'm trying to figure out how this circuit works.

    Its a LM311 Comparator circuit, but what I can't figure out is,what this part is on the the output leg of the LM311.

    The only marking I can see on it are : WX223KG and it has a plastic sort of casing with two legs; one goes to Ground(-) the other is from the output of the LM311.

    Here is the picture
    [​IMG]
     
  2. LTX71CM

    New Member

    May 23, 2010
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  3. LTX71CM

    New Member

    May 23, 2010
    8
    1
    At second glance, doesn't the silkscreen for that part say C2?
     
  4. Kermit2

    AAC Fanatic!

    Feb 5, 2010
    3,789
    945
    'WX' is either a manufacturer code, or a code for the dielectric material used in the cap.

    223 is .022 micro farad.

    'K' is +/- 10% of the value in tolerance

    'G' is a temperature maximum(not sure on the value of these letters) but I think this one is 125 deg. C
     
  5. hgmjr

    Moderator

    Jan 28, 2005
    9,030
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    I agree with those who have identified the part as a capacitor. The reference designator on the board is a good clue.

    hgmjr
     
  6. bdiddie

    Thread Starter New Member

    Sep 7, 2010
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    No I don't have a multimeter with a cap test feature. When I posted in the other forum, I didn't feel comfortable with the reply's. I was looking for a better break down of how they determined the coding or at the very least a possible manufacture name, as I have never seen a capacitor like this.


    Now I'm thinking that the voltage comparator chip might not be a LM311 as there is no pullup resistor on the output; only this cap!
     
  7. DonQ

    Active Member

    May 6, 2009
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  8. bdiddie

    Thread Starter New Member

    Sep 7, 2010
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    Thanks DonQ; exactly what I was looking for!!!
     
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