Test Method

  • Start-up Time, Rise Time, and Hold-up Time


    1.Start-up Time:

    The time required for the output voltage to reach 90% of its set value after the input voltage is applied.

    2.Rise Time:

    The time required for the output voltage to reach from 10% to 90% of its set value.

    3.Hold-up Time:

    The time as the AC input was declined but the output voltage remains regulation for a period of time.

  • AC discharge test


    Measurement of voltage of stored charge 1 second after disconnection of mains plug.


  • Ripple & Noise


      The amplitude of the AC component of the DC output of a power supply usually showed in millivolts peak-to-peak or rms. For a liner power supply it is usually at the frequency of the AC mains. For a switching power supply, it is normally at the switching frequency of the converter stage.


  • Classification of Applied Parts


    Type B  – No electrical contact with Patient and maybe earthed

    Type BF  – Electrically connected to Patient but not directly to heart

    Type CF  – Electrically connected to the heart of the Patient.



      Means of Patient Protection (MOPP) and Means of Operator Protection (MOOP). It is the responsibility of the medical product manufacturer to determine the likelihood of a patient coming into contact, and decide whether patient protection (MOPP) or operator protection (MOOP) to use.

  • Ground Continuity Test


      Determining effectiveness of “ground” grids and connections that are used with the power device to protect personnel and equipment.

  • Transient Response

     The time needed for an output voltage to be within specified exactness limits after a step change in line or load situations.

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