Probably the most used component nobody knows of! TL431 Guide! EB#50
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Date: 2021-10-03
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Comments and reviews: 9
Mark
TL431 - A programmable Zenner diode, I hate them, I first came across them in 1985, and they were unreliable, and kept failing I think the designers were not running the correct current through them, they would fail, go open, and the supply would go as high as possible - e. g. a 12v rail would go up to over 18v, blowing everything up as the 12v rails just had 16v capacitors on them, a few of the caps blew off the tops, very impressive. One failed during a training course just after the instructor had says, type anything you like you can t hurt the computer BANG, the student left the class and got a refund
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TL431 - A programmable Zenner diode, I hate them, I first came across them in 1985, and they were unreliable, and kept failing I think the designers were not running the correct current through them, they would fail, go open, and the supply would go as high as possible - e. g. a 12v rail would go up to over 18v, blowing everything up as the 12v rails just had 16v capacitors on them, a few of the caps blew off the tops, very impressive. One failed during a training course just after the instructor had says, type anything you like you can t hurt the computer BANG, the student left the class and got a refund
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Felix
Help pls.
I don't know much about eletronics, but I want to build a small fixed voltage psu. So my problem is that lipo batteries change their output voltage depending on their charge, but I need a constant voltage of 12 volts. For some LEDs. The leds would only draw about 3amps total. Limiting the current draw for the LEDs is not something I need and the amps being drawn from the batterie dont metter either. I will use a li-Po alarm so that the batterie dosn't discharge too much. The only thing is that the circuit has to be really really small.
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Help pls.
I don't know much about eletronics, but I want to build a small fixed voltage psu. So my problem is that lipo batteries change their output voltage depending on their charge, but I need a constant voltage of 12 volts. For some LEDs. The leds would only draw about 3amps total. Limiting the current draw for the LEDs is not something I need and the amps being drawn from the batterie dont metter either. I will use a li-Po alarm so that the batterie dosn't discharge too much. The only thing is that the circuit has to be really really small.
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Derrek
Da komrad! You and da other eastern maker the afrostryogreatmakerandothers crew. I've been interested in learning the 431 lately and got 2 videos in a week but I rarely need or. Use the 431 or. Any ref outside an internal anyway.
May I. Suggest a diy digital pot, better yet, as a modular. With no microcontroller, or bit banging i2c/SPI/uart/wireless in an interesting way hit. All. The good spots
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Da komrad! You and da other eastern maker the afrostryogreatmakerandothers crew. I've been interested in learning the 431 lately and got 2 videos in a week but I rarely need or. Use the 431 or. Any ref outside an internal anyway.
May I. Suggest a diy digital pot, better yet, as a modular. With no microcontroller, or bit banging i2c/SPI/uart/wireless in an interesting way hit. All. The good spots
reply
Leon
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!
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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!
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Tyrone
I like these witching power supplies, but I also hate how most of them are designed, why would you use such a small sensitive controller ic to switch a mosfet on and off with such a high dc voltage? I think that is dangerous and a major fire hazard.
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I like these witching power supplies, but I also hate how most of them are designed, why would you use such a small sensitive controller ic to switch a mosfet on and off with such a high dc voltage? I think that is dangerous and a major fire hazard.
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Dinkleberg
This is starting repetitive to say but once again. awesome video as always! Love ur content so much! PS: U are using a Teensy and i would love u could take the time to make more projects with that. It's a powerfull microcontroller
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This is starting repetitive to say but once again. awesome video as always! Love ur content so much! PS: U are using a Teensy and i would love u could take the time to make more projects with that. It's a powerfull microcontroller
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Saurit
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
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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
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Alientoast
electronoobs made a video on the same thing, this ic is really incredible, i have a handful laying around from a component kit, well ig ill put some of them to use, awesome video as always
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electronoobs made a video on the same thing, this ic is really incredible, i have a handful laying around from a component kit, well ig ill put some of them to use, awesome video as always
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Ming
I like the 10-12 minute format of this video and I hope you will revisit crossover designs and high voltage for the eskate board and it will be successful. Cheers!
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I like the 10-12 minute format of this video and I hope you will revisit crossover designs and high voltage for the eskate board and it will be successful. Cheers!
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