Probably the most used component nobody knows of! TL431 Guide! EB#50

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I had a 24 volt switched-mode power supply but needed 19 volts. To do this, I simply changed the voltage divider on the TL431. I connected a potentiometer (value corresponding to the old resistor that I removed) between the plus 24 volts and the 2.5 volt sense point of the TL431 and reduced the value until I could measure 19 volts at the output. Then I replaced it with a fixed resistor.

TechBuilder made a short facebook post on this a few months ago. Never knew how nifty it could be by adding an outboard pass transistor. Been using it as a handy adjustable voltage reference for adcs

You should make a video or video series on feedback loop design. I would really appreciate it and I am sure others as well

What a huge coincidence to have the same topic. When I've posted my video and saw your post too I couldn't believe it. The odds are low:))) Btw, very nice video 👌🏻

Working out how circuits work doesn't come easy for this old guy, so good explanations are a God send. Many thanks, have subscribed and hope to see more of your videos.

I recently used the TL431 for balancing supercaps. Acts like a 2.5V Zener diode without any additional components, just REF to Cathode.

A very useful component, discovered it not too long ago when I tried building my first switched mode power supply, since it is so cheap and easy to get I use it in all sorts of applications from voltage references for arduino to tiny constant current load for my power supplies, amazing how versatile this little component is.

It's incredible how such a small component can be so useful. Amazing vid as always. Gonna buy myself some TL431's.

This is the freakiest thing ever. Possibly. I’ve literally just been pricing up TL431s for the SMPS section of the Mac Classic analogue board (PSU and CRT section) schematic I’m staring at right now, when the notification for this video came through. Timing could not have been more perfect!

This video combines my two favourite things! A deep dive into a fun component and its applications, and a component that has become cheap because of how often it is used in industry. My last project actually used a TL431 - a voltage monitor to automatically cut-off power from a lead-acid battery for only a buck or two in parts. Thank you, and keep up the great videos!

As new electronics thinker, I was going to order a whole kit of zener diode ....but after watching this video.....I will just buy some of these TL431. This is really good to know about this. Thank you #greatscott

The TL431 has been used for decades. Introduced by TI in 1977, now made by many major semiconductor companies.

Ahhh yes voltage reference tl431 one of the most usefull components. As always awesome video🔥🔥🔥 Cheers!

Please keep in mind one important characteristic of this programmable Zener IC. It's fully temperature compensated, unlike any Zener that ever lived. Zeners are so yesterday.

TL431, I've got hundreds of these I've pulled from SMP's for years. Great little part. I've watched some over time on my 3457A and they don't drift all that much, pretty good for what they are normally used for.

Anyone else on youtube: Let's get started! Great Scott music starts playing in head

Strange — I use TL431 all the time. One of the best ways I found to control the current of a high-power LED (either linearly or through a switching converter) is with an op-amp comparing shunt voltage to a reference. TL431 is the exact thing you need for the job — the 2.495V it produces by default can be easily divided into anything you need, and, unlike a Zener diode, it can sink a wide range of currents with Vref staying within a tight range. It's basically an extremely accurate Zener that doesn't require you to meticulously precalculate the value of R_Z. Simply great!

Just recently I was looking up the internet for over current pull down protection for my circuit and this IC popped up... Thanks for explaining the working in details!

My fav Op Amp was the 741, and was in a class with its designer as our instructor in 84. I like the way you present your evaluations Thanks