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  • esr in capacitor
    Equivalent Series Resistor (ESR) Value in Electrolytic Capacitors 

                  Equivalent series resistor (ESR) in electrolytic capacitor is an interesting topic. Electrolytic capacitors can be found in many circuits in a circuit board but in today’s article I’m going to...

    • Posted September 29, 2021
    • 40
  • IGBT and Industrial Bridge Rectifier Shorted

    The machine was donated to me about two months ago because the customer thought it was too expensive to be repaired so he went and bought a new machine instead. I was planning to dismantle the machine...

    • Posted September 29, 2021
    • 12
  • how to fix hair trimmer
    Electronic Circuit Turning On Itself Repaired

                  A customer called me about a device that he owns. He explained that during the night he woke up to a sound of a machine working which he realized later...

    • Posted September 29, 2021
    • 8
  • 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