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Type: Posts; User: MicrosiM

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  1. Replies
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    Sticky: Using the insert image now, and its fully working...

    Using the insert image now, and its fully working also

    7300
  2. Replies
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    Sticky: Uploading your image Can you make a quick...

    Uploading your image

    Can you make a quick video and show me whats going exactly? this thing is driving me crazy.
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    Sticky: Silvio Email me some images and I try to...

    Silvio

    Email me some images and I try to upload them from here

    Or try now, I made some changes
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    Sticky: Manage attachments then Add files, then choose...

    Manage attachments then Add files, then choose file the upload?
    And nothing happens??
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    Very strange, it works for me here did you try...

    Very strange, it works for me here

    did you try different browser?
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    Sticky: Uploading 3.5MB image from Microsoft Edge

    Uploading 3.5MB image from Microsoft Edge
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    Can you tell me what error you got?

    Can you tell me what error you got?
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    Upload issue has been resolved yesterday, now you...

    Upload issue has been resolved yesterday, now you can upload without any problem
  9. Replies
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    Sticky: 97% efficiency seems wrong to me also. I am...

    97% efficiency seems wrong to me also.

    I am unable to obtain more than 92% efficiency with a SMPS & PFC front end.

    Hope you are using the proper measuring tools
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    Image uploading problem has been solved now. ...

    Image uploading problem has been solved now.

    Please upload your images to the forums as external links will result into deleting the entire post !!!:
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    Sticky: @Knooier...

    @Knooier

    Upload your images to the forums directly, external links removed
  12. Replies
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    Sticky: Just found the problem, and it is fully solved by...

    Just found the problem, and it is fully solved by now you can upload images with up to 8MB.

    Attached
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    I know that there is a problem, but I dont have...

    I know that there is a problem, but I dont have time to look into it and fix it.
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    Let me look into this upload issue

    Let me look into this upload issue
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    Sticky: If your image size is over 2MB it will not upload...

    If your image size is over 2MB it will not upload
    Compression utility is needed to compress
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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...
  19. Thread: SMPS Repair

    by MicrosiM
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    1,553

    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.
    ...
  21. 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.
  22. 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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