Understanding Switching Mode Power Supplies

Ғылым және технология

This video provides a short technical introduction to switching mode power supplies and explains how they are used to convert alternating current into direct current.
Learn more about power electronics testing: rsna.us/6053iCQpH
Timeline:
00:00 Introduction
00:15 Suggested viewing
00:34 Review of linear power supply
01:07 Addressing the limitations of linear power supplies
02:09 About switching mode power supplies (SMPS)
03:05 Basic AC-DC SMPS block diagram
04:00 AC rectifier and filter
04:26 Switcher (chopper)
05:28 Transformer
06:08 Pulsed DC rectified and filter
06:38 Aside: DC-DC conversion
07:43 Voltage regulator / controller
08:42 Advantages and disadvantages of SMPS
09:50 Summary

Пікірлер: 18

  • @brandonkoh8361
    @brandonkoh83615 күн бұрын

    Im someone with very very basic understanding of electronics, and this was incredibly helpful. Theres a lack of information in this area on the internet, and the stuff out there is chock full of misinformation, so Im glad that I could find this easy to understand video.

  • @tav9755
    @tav97553 ай бұрын

    This „understanding“ series is really well made. Good explanation and a pro narrator.

  • @pauldenisowski

    @pauldenisowski

    3 ай бұрын

    Thank you! There are many, many more videos coming!

  • @spelunkerd
    @spelunkerd3 ай бұрын

    I really like the logical and simple way you explain complex topics.

  • @pauldenisowski

    @pauldenisowski

    3 ай бұрын

    Thank you! I like to tell people that I'm making the videos I wish I had when I started out working as an engineer :)

  • @davidluther3955
    @davidluther39553 ай бұрын

    A LOT INFORMATION HERE TO THINK ABOUT

  • @gerdschneider6098
    @gerdschneider60983 ай бұрын

    Very well explained!

  • @pauldenisowski

    @pauldenisowski

    3 ай бұрын

    Thank you! Really appreciate it!

  • @transformateur9969
    @transformateur99693 ай бұрын

    Great explanation! Could you explain how the input filter and power factor correction work too?

  • @MrSamsyria
    @MrSamsyria8 күн бұрын

    Very clear

  • @mhnoni
    @mhnoni2 ай бұрын

    But why laptop power supply have no transformer component? isn't it a Switching Mode Power Supply? how does it lower down the voltage? or the transformer is there but just small one?

  • @pauldenisowski

    @pauldenisowski

    2 ай бұрын

    There is a transformer in AC/DC laptop power supplies - it's typically not exactly "small" compared to the size of the entire supply, but it is much smaller than one that would be needed in a linear power supply (I'm not aware of any modern laptop chargers that are not SMPS). If you search KZread you can find some teardown videos that show the transformer in a laptop power supply. Hope that helps!

  • @mhnoni

    @mhnoni

    2 ай бұрын

    @@pauldenisowskiI see, thanks for the confirmation, I thought it had no transformer since the size is very small compared to the PC PSU.

  • @GiC7
    @GiC7Ай бұрын

    Thanks

  • @pauldenisowski

    @pauldenisowski

    25 күн бұрын

    Thanks!

  • @The_Real_Grand_Nagus
    @The_Real_Grand_Nagus6 күн бұрын

    if your ultimate goal is to reduce the voltage, why use a FBR? Why not just grab the half of the cycle?

  • @Originalsunrunner20

    @Originalsunrunner20

    5 күн бұрын

    It's inefficient (conversion wise), and produces an awful power factor. It also requires larger capacitors to keep the output stable, which naturally cost more. I'm sure there's other reasons- maybe it causes more coil whine?

  • @The_Real_Grand_Nagus

    @The_Real_Grand_Nagus

    5 күн бұрын

    @@Originalsunrunner20 Thanks. I figured it might be inefficient, but I didn't know it would require larger capacitors.

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