The Best Protection for your Circuits? eFuse! Here is why they are awesome! EB#48



$2 for 1-4 Layer PCBs, Get SMT Coupons: https://jlcpcb.com/AAA
Previous video: https://youtu.be/pOsgXDpUQdM
LiPo Supercharger video: https://youtu.be/6LxRnf6sQNQ
Short Circuit (Overcurrent) Protection video: https://youtu.be/7ctPSgaLxbc
Reverse Voltage Protection Circuit video: https://youtu.be/7Tk5ghH_U2s
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You can get an eFuse here: (affiliate link)
https://s.click.aliexpress.com/e/_APh7dh

In this electronics basics episode we will have a closer look at eFuse ICs. They offer a ton of protection features for a very small price tag. That is why I will show you how I used such an eFuse in my LiPo Supercharger project and how you can use it for pretty much every electronics project. The included protection features are the following: undervoltage, overvoltage, reverse voltage, overcurrent and short circuit current. Let’s get started!

Thanks to JLCPCB for sponsoring this video.
Visit https://jlcpcb.com to get professional PCBs for low prices.

Music:
2011 Lookalike by Bartlebeats

0:00 The ideal way to power electronics
1:00 Why you need an eFuse!
2:19 Intro
2:51 How to select an eFuse IC?
5:10 How to wire it up?
6:01 Set the undervoltage limit
7:11 Set the overvoltage limit
8:23 Set the current limit
9:36 Verdict
10:12 Adding a reverse voltage protection

source

29 thoughts on “The Best Protection for your Circuits? eFuse! Here is why they are awesome! EB#48

  • April 18, 2021 at 8:32 pm
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    Very informative. I was using a power bank in a project and it would cut out all the time, after roughly a few seconds. I've also tried my very good Anker power bank and it behaved the same. So I've given up on that and just use a 2S lipo directly. I don't think I was drawing a huge amount of current.

    Reply
  • April 18, 2021 at 8:32 pm
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    I have so many ideas of circuits but so little knowledge in electronics. (barely kid level knowledge) It's hard to find some adult beginner oriented courses.

    Reply
  • April 18, 2021 at 8:32 pm
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    So.. you are telling me, the thing that prevents NintendoSwitch downgrades has other uses ?

    Reply
  • April 18, 2021 at 8:32 pm
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    I totally thought this was going to be about the other kind of efuses (like in a micro controller). Was not expecting this, but I'm pleasantly surprised. Regarding the reverse voltage protection, what would be the down side of just rectifying the input with passive components?

    Reply
  • April 18, 2021 at 8:32 pm
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    Great video, but choose a more exciting example project than a blinking led

    Reply
  • April 18, 2021 at 8:32 pm
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    I wanted to build your very old project (Bluetooth firework ignitor) but i can't find any schematics or parts list. Is it deleted or redirected on another page?

    Reply
  • April 18, 2021 at 8:32 pm
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    does anyone know how "real" short circuit protection work? the one based on the voltage, not on the current

    Reply
  • April 18, 2021 at 8:32 pm
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    ughhh this video came like a week too late! after I spent 2 weeks to try and figure this out 😛 . thank you though!!

    Reply
  • April 18, 2021 at 8:32 pm
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    I wasn't able to find any eFuse that would work below 2.5V, it seems that the market is somewhere else than my circuits.

    Reply

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