Understanding Switching Mode Power Supplies

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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

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Опубликовано:

25 июн 2024

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Комментарии : 21

@brandonkoh8361 29 дней назад

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 4 месяца назад

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

@pauldenisowski 4 месяца назад

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

@spelunkerd 4 месяца назад

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

@pauldenisowski 4 месяца назад

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 :)

@gerdschneider6098 4 месяца назад

Very well explained!

@pauldenisowski 4 месяца назад

Thank you! Really appreciate it!

@davidluther3955 4 месяца назад

A LOT INFORMATION HERE TO THINK ABOUT

@transformateur9969 4 месяца назад

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

@MrSamsyria Месяц назад

Very clear

@pauldenisowski 21 день назад

Thank you for watching!

@GiC7 2 месяца назад

Thanks

@pauldenisowski Месяц назад

Thanks!

@mhnoni 3 месяца назад

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 3 месяца назад

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 RU-vid you can find some teardown videos that show the transformer in a laptop power supply. Hope that helps!

@mhnoni 3 месяца назад

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

@The_Real_Grand_Nagus Месяц назад

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

@Originalsunrunner20 Месяц назад

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 29 дней назад

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

@pauldenisowski 21 день назад

@@Originalsunrunner20 Thanks - you beat me to it :)