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

Kinley share the eFuse schematic for 3.3V esp32

Hi @GreatScott! I realize this is far after the video was made. But I have a question on the undervoltage. I don't understand how you having 1.2 as aresult of the VIN(UV) equation relates to a cutoff of 4 V and a cutin of 4.5V please.. please explain this to me. There is no info online that I can find to answer this?

semiconductors work greate as efuses to protect real fuses.

Unfortunately the aliexpress above link says: "Leider ist dieser Artikel an Ihrem Standort derzeit nicht verfügbar."

I have a GaN Charger that uses both an eFuse and a Resettable Fuse

How do you reset the Efuse??
GREAT VIDEO!!!!......again

Anyone knows where I could get eFuse in bulk? I don't see any on LCSC.

Man könnte auch einfach 4 dioden nutzen um die Spannung anzulegen wie wir wollen und brauchen dann kein verpohlungs Schutz

Hah, first that I knew about these, gonna order a few to have on hand!

Can you also make a video for the SMD more advanced version please!?

eFuse is outdated, eHammer is the new fashion !

Is there something I can buy that’s premade? I have a plasma cutter with a 50:1 output. That puts out about 2.5volts I need something that won’t let the voltage go above 8 volts and will shut down if ac hits it to. Reverse voltage would be good also. Is there something I can buy?

GreatScott, why not just use a full bridge rectifier for reverse voltage "correction"? It can even work with reversed voltage!

Thank you for sharing your vast knowledge! My biggest problem now is geographical location, since I now live in Brazil (6000 miles away from my native England), there are very few components available here, you need to order from China or buy in quantities of thousands from Farnell, Mouser etc!

Very well produced and clearly explained video. Thank you.

protection süket? ;)

I LOVE 💕 YOU 😚 MAN

I'm making a project that needs the voltage current limited to 150mA. I want to use the Efuse for this project, what resistor value do I need to limit the current to 150mA?

Getting sick of your long intros and blatant advertisements. It's not how you got the viewership and you shouldn't bait-and-switch for even more money. You're losing viewers.

It looks like every eFuse is sold out. I can't find anything.

You’re amazing, thanks for sharing all this knowledge. I’m a hobbyist and you make easier for all of us to understand and apply the concept to our projects. Thanks!

Do these cheap protections come with costs to efficiency? Obviously the overvoltage case did but the others weren't immediately obvious to me.

When you say eFuse, will it also act lick a traditional fuse if there is a dead short on the output, if so how does it reset?
Thanks

sir i am tossing my mind from a month long, please suggest me idea to make functioning of alphanumeric display HDSP 2965 ,which controller is suited for this display

🤘🤘🤘🤘 Daaaaankeee!!! 🤘🤘🤘🤘

Smart man...

Sigh..... nice components.

BUT!!!

Fat chance of getting either of those, TPS259621DDAR or 595-TPS25940ARVCR.
Not ONLY is Mouser out of stock, they don't expect any until..... GET READY FOR THIS....

17 March 2023 at the earliest!!

I think that GScott bought the last bunch of them. LOL

Interesting IC, I didn't know about it, thanks for the video. Cheers! :)

"where's the fun in reading the datasheet?"
1 min later: "according to the datasheet..."

I joke, you have great detailed videos. Thanks for explaining even the basics, this helped more than my undergrad degree ever did.

PLEASE, STOP making 10 recordings for one sentence! It breaks the flow, just make a pause before and after

I can’t watch cause of your highlighter technique

I dunno how many times I have fried electronics by accident in my circuits lol

What are sukits? 🤣

This might be a dumb question but, for the reverse power protection, couldn't we just use some good ol' diodes?
I mean unless we go beyond the break through voltage

Scott, you’re a LEFT handed genius

MONSTURV

Looking at the picture in aliexpress, the product that you linked in video description does not look like the one in video. Can you check the link?

Hi, best reverse voltage protection it the bridge diode rectifier ;-)

How about to connect a series diode for reverse voltage 😊😊

I always find it amusing when you talk about the price point of these components. "You can invest a bit more money into an advanced eFuse IC" like bro, the advanced IC is $2, don't be a tight ass hahah- but on a more serious note, I am used to building valve amps with my electronics skills and holyyyy shit. It can cost hundreds of dollars for a power transformer.

useful circuit

Staedtler felt marker pens are the best for diagrams. Good choice!

why not full bridge rectifier instead of a reverse protection?

Have you ever built the portable power packs like you used in this video?

Great, maybe this is my next solution, working with colleagues capable of breaking anything they touch...

One thing I've learned at work is: Regardless of the amount of protection I put in my circuits, my (non-tech) colleagues will always find a way to destroy them...
They have:
- Put a powered PCB on top of a metal table, during testing...
- Ripped a USB-B port of my board, trough hole version...
- Reversed the polarity, on a prototype in which I told them to wait on me before powering it...
- Used the wrong adapter / battery / voltage...
- Used it outside without proper watertight enclosure...
- Put multiple PCB's on top of each-other, while powered...
- Peeled of a 0402 capacitor, because they thought it looked like a dirty breadcrumb...
- ...

I would dare the military to lend them one of their armored vehicles, for testing purposes. My colleagues would probably break it within the next 5 minutes, by just looking at it.

Any chance you have a wiring diagram for this example?

How would you calculate modifications to the resistor network for the under voltage protection to cut off at a different voltage?

A Schottky diode will steal maybe 0.25V at these currents and is cheap polarity protection.

i love your videos but please do something about your breathing