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Waveforms In Electronics Circuit

By on January 18, 2010

Usually an expert would just use a scope to test on certain critical test points in an equipment to determine the fault. Placing the scope on the right point would usually give you an idea whether the circuit is working or is bad. These few critical test points got to be created by you or referring to books that relates to your equipment. If you are particular enough, in fact you can try to create more test points within that circuit. With this way, you will have advantage to solve a problem fast. Creating your own test points need your hard work and it can only be done when you put action into it.

Turn on a working equipment and start to put your scope probe on the appropriate points and record down all the waveforms. It will be worth the time spent on this kind of testing and when there is problem with that equipment, i guess you should have no problem in diagnosing the fault.



  1. mike

    January 19, 2010 at 6:25 pm

    Hi Jestine,

    Recently, a storm hits my home and my Akira CT-21SJ9CPT crt tv suddenly dead. When I turned it on, it display no picture but the audio and OSD are present. Do you have any tips or guide on how to fix this kind of issue? Thanks.

  2. admin

    January 20, 2010 at 5:50 am

    HI Mike,

    It could be no supply voltage to the flyback transformer or a missing horizontal base drive waveform. I guess you need to open up the casing and start to check the B+ voltage to the flyback. The B+ voltage should have about 110 Vdc.


  3. mike

    January 20, 2010 at 7:10 am

    Thanks Jestine. I'll give it a try.

  4. sanji

    February 4, 2011 at 12:04 pm

    discuss the waveforms of the input and output voltages of full-wave rectifiers for resistive load?

    can you explain for me.Pleaase

  5. admin

    February 5, 2011 at 5:24 am

    HI Sanji,

    There are lots of info of this and can be found from the internet or any electronics text book.



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