The first 1,000 people to use the link will get a 1 month free trial of Skillshare: https://skl.sh/greatscott07221 Free Altium Designer Trial: https://altium.com/yt/greatscott! Previous video: https://www.youtube.com/watch?v=VApJ_oaZAk0 DIY Overcurrent Protection circuit video: https://www.youtube.com/watch?v=7ctPSgaLxbc 555 Timer video: https://www.youtube.com/watch?v=fLaexx-NMj8 Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Instagram: https://www.instagram.com/great.scott.lab/ Support me for more videos: https://www.patreon.com/GreatScott?ty=h You can get the shown components here: (affiliate links): SR Latch IC (74LS279): https://s.click.aliexpress.com/e/_DCvoI1Z NOR Gate IC (74HC02): https://s.click.aliexpress.com/e/_DENPL71 BC547 NPN BJT: https://s.click.aliexpress.com/e/_Dey4ikR IRF5210 MOSFET: https://s.click.aliexpress.com/e/_DFNd8oJ Resistors: https://s.click.aliexpress.com/e/_Ddi4rk7 Capacitors: https://s.click.aliexpress.com/e/_DFCYSpD In this episode of electronics basics we will be having a closer look at latch circuits. As the name suggests, a latch circuit activates/deactivates a switching element through one Set/Reset voltage input pulse and keeps it in that state. Because of that latch circuit are everywhere. They are part of other circuits or come in the form of power switches or latching relays. Let's learn all about them and build one! Websites which were shown/used in the video: https://randomnerdtutorials.com/latching-power-switch-circuit-auto-power-off-circuit-esp32-esp8266-arduino/ http://www.mosaic-industries.com/embedded-systems/microcontroller-projects/electronic-circuits/push-button-switch-turn-on/latching-toggle-power-switch http://www.learningaboutelectronics.com/Articles/Latch-circuit-with-transistors.php https://www.ti.com/lit/ds/symlink/sn74ls279a.pdf?ts=1655808263577&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FSN74LS279A https://www.youtube.com/watch?v=Foc9R0dC2iI https://en.wikibooks.org/wiki/Digital_Circuits/Latches#:~:text=Since%20the%20gated%20SR%20latch,inverse%20of%20the%20remaining%20input. https://www.mouser.de/ProductDetail/E-Switch/ST5DP104T2C1?qs=aP1CjGhiNiEOL7BFmWVZ8Q%3D%3D https://www.mouser.de/ProductDetail/TE-Connectivity-PB/1-1825137-6?qs=GQ3BsEl46pk8vicKht%252BRUg%3D%3D https://www.mouser.de/ProductDetail/Infineon-IR/IRF5210PBF?qs=9%252BKlkBgLFf3S3YiL4ijtLg%3D%3D https://www.google.com/search?q=latch+circuit&tbm=isch&ved=2ahUKEwiags2xhc34AhXuwwIHHevrAuwQ2-cCegQIABAA Thanks to Skillshare for sponsoring this video. 0:00 What/Why Latch circuit? 1:33 Intro 2:33 Logic Gate Latch 5:31 Latching Relay 6:22 Toggle On/Off Power Latch circuit 8:57 Set/Reset Latch circuit 10:01 Verdict