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All posts by Jestine Yong

  • rc snubber circuit
    Functions Of RC Snubber Circuit In SMPS

    In my last article you have learned about the functions of the electrolytic and non-polarity capacitor (connected parallel) in the DC output line of a switch mode power supply (SMPS). In today’s article I will show you...

    • Posted September 23, 2021
    • 33
  • home made hot plate tool
    Making Small DIY Hot Plate Using Door Stopper Tower Bolt

                We found while desoldering, some SMD component is having solder joint underneath that  it is difficult to remove the component using soldering Iron. So this I made trick to make hot...

    • Posted September 23, 2021
    • 14
  • multimeter repair
    Suoer Digital Meter That Does Not Easily Power On

    It is my digital meter that was purchased about a year ago, that refused to power on, I guess the power switch is faulty. So I decided to repair it. Open it up and this is the...

    • Posted September 23, 2021
    • 11
  • What's The Purpose Of Two Different Capacitors In Parallel?
    What’s The Purpose Of Two Different Type Of Capacitors In Parallel?

    Repairing Switch Mode Power Supplies (SMPS) can be much fun, interesting but sometimes you may get frustrated too if it can’t be repaired. There are simple and complex designs of SMPS in the market. Problems of SMPS...

    • Posted September 16, 2021
    • 52
  • led light bulb repair
    LED Bulb Repaired

    I found few dead LED Bulbs in my Junk Box I have not tested because of busy schedule. Bulb’s domes Opened for visual inspection. All of them are of 7W. Visually tested everything seems fine and there...

    • Posted September 16, 2021
    • 23
  • hdd repair
    Recovery Of A Defect Unreadable HDD

    Recently a good friend, who lives in Eindhoven about 35 kilometers from my hometown Weert, came by with a bad harddisk. He first had e-mailed me to help him to recover his 3D printer design files with...

    • Posted September 10, 2021
    • 14
  • multimeter repair
    Non Repairable Of UNITY 830D Multimeter

    I was at a bike service center for routine servicing of my Bike. In conversation about new technology trend of bike. Suddenly mechanic remembered that he has one multimeter which was damaged by one of his helper...

    • Posted September 10, 2021
    • 8
  • mixer grinder repair
    Sisil Mixer Grinder Repaired

    A customer sent to me this Sisil Mixer Grinder with the complaint of no power. Whenever a grinder that has the problem of not working it can be due to broken wires, a failed motor, control problems...

    • Posted September 10, 2021
    • 3
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