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MASTECH MS8911-Smart SMD Tester(R/L/C)

Discussion in 'General Electronics Discussion' started by caps, Mar 15, 2019.

  1. caps

    caps

    85
    4
    Jul 29, 2018
    I bought RLC tweezers for measuring SMD components. We know that many components do not have marking values, which makes it difficult to find faulty components in the circuit.
    Tweezers work perfectly according to all specifications.
    Given the relatively low price, it is a very good assistant in amateur and professional practice.
    http://www.mastech-group.com/products.php?cate=104&PNo=78
     

    Attached Files:

  2. Harald Kapp

    Harald Kapp Moderator Moderator

    8,881
    1,751
    Nov 17, 2011
    Without knowing the expected value it is only of limited help measuring a component. Unless it is obviously faulty (e.g. a shorted capacitor or an open resistor) a measurement tells you only so much. Although you should always be aware that measuring a component in-circuit is the second best method. You will measure the parasitic effects of the other connected components, too. If you can, always measure a component detached from the circuit.

    Nevertheless this kind of instrument is really handy it leaves one hand free for whatever you need it for, if only to hold the component to be measured (especially round components have a tendency to roll away from the probes).
     
  3. caps

    caps

    85
    4
    Jul 29, 2018
    Special design of gold-plated probes, confidently holds the components of any configuration.
    Autocalibration saves time and nerves, allowing you not to be distracted by the measurement process.
    There is no need to remove the measured components. Measuring voltage is 100 mV. At this voltage there is no influence of other components.
    Electrolytic capacitor 0,47uF/400v.ESR-31Ohm.
    Very good.
    Resistor SMD 0,02 Ohm.
     

    Attached Files:

    Last edited: Mar 15, 2019
  4. caps

    caps

    85
    4
    Jul 29, 2018
    Inductance SMD 0,3uH.
    Very good.
     

    Attached Files:

  5. caps

    caps

    85
    4
    Jul 29, 2018
    Measurement of capacitance,shunted by low-impedance resistors.
    Capacitor 1000uF.Measured capacitance-910uF.
    In parallel .8Ohm.
    In parallel. 4.Ohm.
    Very good. Just super.
    :)
     

    Attached Files:

  6. caps

    caps

    85
    4
    Jul 29, 2018
    Film capacitor in the circuit.
    0,22uF.
     

    Attached Files:

  7. caps

    caps

    85
    4
    Jul 29, 2018
    Ceramic capacitor 23uF.10kHz.
    ESR 0,00 Ohm.
     

    Attached Files:

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