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    You are more than welcomed. Enjoy

    You are more than welcomed.

    Enjoy
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    Check power devices, then make sure that the chip...

    Check power devices, then make sure that the chip has the supply needed to power it up.

    Also, check those capacitors at the primary side
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    PFC should be set at 380VDC as minimum as going...

    PFC should be set at 380VDC as minimum as going lower than that requires redesign of the loop.

    And the most important thing to remember is to test at 100VAC as this is the point that shows if your...
  4. Thread: SMPS Repair

    by MicrosiM
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    It looks to me its based on some FSFR chip. ...

    It looks to me its based on some FSFR chip.

    However, you have to fix the standby power supply, then you have to check the main power supply.

    If you post a better quality picture from top?
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    NCP1635 is not the best choise chip for PFC, but...

    NCP1635 is not the best choise chip for PFC, but you could experiment with it.

    Cores from https://www.mag-inc.com/ will do the job perfectly, look for the suitable core for your application.
    ...
  6. I dont know the exact reason for the 100Hz noise,...

    I dont know the exact reason for the 100Hz noise, but I am sure that the noise is related to your PCB, or maybe to your transformer.
  7. I am not sure if your modification will make it...

    I am not sure if your modification will make it work the way you think, it is normal to get the higher voltage when adjusting those resistors, this happens with all power supplies.
    but the problem...
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    IR2110 is a robust chip if used properly with the...

    IR2110 is a robust chip if used properly with the proper PCB layout, and can easily drive 4 IGBTs without any issues.

    Using those optos also is a robust solution, but you need to make proper...
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    Powersoft is the worst company in the world when...

    Powersoft is the worst company in the world when it comes to technical support and service.

    I have 5 (T7) amplifiers setting here, becasue that stupid company refuses to support.

    Good luck
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    I think repairing this amplifier will require you...

    I think repairing this amplifier will require you to do the below

    1- Determine where is the problem exactly, in the power supply section? in the amplifier section? in both?
    2- Either way you have...
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    Lets start with some high quality pictures of the...

    Lets start with some high quality pictures of the internals of the amplifier
  12. I also would suggest that you start building your...

    I also would suggest that you start building your prototype, because simulations are tricky sometimes.
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    Any updates on this?

    Any updates on this?
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    Did you try to go down to RFmin = 10Khz

    Did you try to go down to RFmin = 10Khz
  15. Hello SSL certificate installed, moved to a...

    Hello

    SSL certificate installed, moved to a better hosting.

    Please advice if you notice any difference
  16. The most direct question comes to mind is going...

    The most direct question comes to mind is going regulated or unregulated SMPS, Then you will figure out witch topology is needed.

    However, a SMPS with those many outputs is not going to be simple...
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    @Res That means your SMPS is not running...

    @Res

    That means your SMPS is not running properly, and I believe that you still have a lot of work to do.

    Good luck
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    Yes, that makes sense, but optimal point where Fs...

    Yes, that makes sense, but optimal point where Fs = Fr, thats my own opinion.

    Thanks
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    @ Res I am not sure if thats the reason for...

    @ Res

    I am not sure if thats the reason for the semi sinusoidal waveform, in my case I have almost perfect sinusoidal wave form at the Cr without connecting any resistors to it (when the SMPS is...
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    @Res Very good results. Could you please...

    @Res


    Very good results.

    Could you please confirm the below points, because I am little confused?

    In one of your videos, I saw that you have almost a sine wave shown on your oscilloscope....
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    @ xuantunt...

    @ xuantunt

    Turning a DIY product into a commercial product without permission?

    Your account is disabled now, you wont be able to join again.

    Thanks Silvio
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    You need to pay attention to those Ebay chips. ...

    You need to pay attention to those Ebay chips.

    But also you have to be aware that L6599A will NOT work if its not fully assembled, Trying to power it up from external power supply will be waste of...
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    I think that the design tip talking about two...

    I think that the design tip talking about two different ICs, L6599 & L6699 not L6599A or L6599

    and that makes huge sense when you are using different chip.

    Hope that helps.
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    Nice work as usual Silvio

    Nice work as usual Silvio
  25. Hello You can post your questions without any...

    Hello

    You can post your questions without any issues.

    You are welcomed.
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