In this video I explain in detail what the TL431 is, a programmable voltage regulator that has become essential in many electronic circuits. We explore how it works, its most common applications in power supplies, and how it interacts with the optocoupler to achieve precise voltage control and galvanic isolation. If you are interested in learning electronics, you can't miss it! In addition, we show you a practical diagram to understand how it works together in a regulated power supply. PWM oscillator adjustable zener oscillation switching power supply voltage triode tl431 What is and how does the Tl431 and the opto coupler work? TL431how does TL431 workHow work TL431voltage regulator TL431how to use TL431electronics fpachainselectronic coursehow to use TL431 Programmable adjustable voltage reference Integrated circuit 2.5v suitable 36v maximum volts Zener diode reference switching source power supply power supply tv repair repair Diacs.. switching mosfet chopper schottky feedback pc817 Don't forget to subscribe, like and activate the bell so you don't miss any more content about electronic circuits, components and DIY projects. Share this video with other electronics lovers! #TL431 #Optocoupler #switchedsource #mosfet