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32kHz crystal

Discussion in 'Microcontrollers, Programming and IoT' started by Rajinder, Dec 13, 2020.

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  1. Rajinder

    Rajinder

    474
    9
    Jan 30, 2016
    Hi,
    I have noticed that a 32kHz crystal has malfunctioned i.e. not oscillating, it is cracked, what could cause this to happen?
    Thanks
     
    Last edited by a moderator: Dec 13, 2020
  2. bertus

    bertus Moderator

    1,336
    525
    Nov 8, 2019
    Hello,

    When you say it is cracked, it must have been mechanicaly mistreated.
    Crystals are small pieces of quartz crystal or a synthetic quartz grown crystal.
    https://en.wikipedia.org/wiki/Crystal_oscillator
    They can not withstand bumping.

    bertus
     
  3. davenn

    davenn Moderator

    13,722
    1,913
    Sep 5, 2009
    you sure you are looking at the crystal ?

    most will be in a tiny metal tube with 2 wires out one end less common for them is like in the link that Bertus supplied

    [​IMG]



    and occasionally will be in a epoxy type encapsulation like ......

    [​IMG]


    So is it like one of those or something completely different ?

    Also as Bertus said, it would only crack is physically struck. They only have a tiny current / voltage associated with them


    Dave
     
  4. bertus

    bertus Moderator

    1,336
    525
    Nov 8, 2019
    Hello,

    How did you test the crystal?
    When it is a single crystal, you will need to make an oscillator with it.
    In the attached PDFs you will find some oscillator schematics and other info for crystals.

    Bertus
     

    Attached Files:

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