Uploaded July 2022 | Updated September 2026, 2 weeks ago
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: altium.com/yt/greatscott!
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Previous video: youtu.be/VApJ_oaZAk0
DIY Overcurrent Protection circuit video: youtu.be/7ctPSgaLxbc
555 Timer video: youtu.be/fLaexx-NMj8
Facebook: facebook.com/greatscottlab
Twitter: twitter.com/GreatScottLab
Instagram: instagram.com/great.scott.lab
Support me for more videos: 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:
randomnerdtutorials.com/latching-power-switch-circuit-auto-power-off-circuit-esp32-esp8266-arduino
mosaic-industries.com/embedded-systems/microcontroller-projects/electronic-circuits/push-button-switch-turn-on/latching-toggle-power-switch
learningaboutelectronics.com/Articles/Latch-circuit-with-transistors.php
ti.com/lit/ds/symlink/sn74ls279a.pdf?ts=1655808263577&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FSN74LS279A
youtube.com/watch?v=Foc9R0dC2iI
en.wikibooks.org/wiki/Digital_Circuits/Latches#:~:text=Since%20the%20gated%20SR%20latch,inverse%20of%20the%20remaining%20input.
mouser.de/ProductDetail/E-Switch/ST5DP104T2C1?qs=aP1CjGhiNiEOL7BFmWVZ8Q%3D%3D
mouser.de/ProductDetail/TE-Connectivity-PB/1-1825137-6?qs=GQ3BsEl46pk8vicKht%252BRUg%3D%3D
mouser.de/ProductDetail/Infineon-IR/IRF5210PBF?qs=9%252BKlkBgLFf3S3YiL4ijtLg%3D%3D
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
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: altium.com/yt/greatscott!
(AD, Paid Promotion)
Previous video: youtu.be/VApJ_oaZAk0
DIY Overcurrent Protection circuit video: youtu.be/7ctPSgaLxbc
555 Timer video: youtu.be/fLaexx-NMj8
Facebook: facebook.com/greatscottlab
Twitter: twitter.com/GreatScottLab
Instagram: instagram.com/great.scott.lab
Support me for more videos: 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:
randomnerdtutorials.com/latching-power-switch-circuit-auto-power-off-circuit-esp32-esp8266-arduino
mosaic-industries.com/embedded-systems/microcontroller-projects/electronic-circuits/push-button-switch-turn-on/latching-toggle-power-switch
learningaboutelectronics.com/Articles/Latch-circuit-with-transistors.php
ti.com/lit/ds/symlink/sn74ls279a.pdf?ts=1655808263577&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FSN74LS279A
youtube.com/watch?v=Foc9R0dC2iI
en.wikibooks.org/wiki/Digital_Circuits/Latches#:~:text=Since%20the%20gated%20SR%20latch,inverse%20of%20the%20remaining%20input.
mouser.de/ProductDetail/E-Switch/ST5DP104T2C1?qs=aP1CjGhiNiEOL7BFmWVZ8Q%3D%3D
mouser.de/ProductDetail/TE-Connectivity-PB/1-1825137-6?qs=GQ3BsEl46pk8vicKht%252BRUg%3D%3D
mouser.de/ProductDetail/Infineon-IR/IRF5210PBF?qs=9%252BKlkBgLFf3S3YiL4ijtLg%3D%3D
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
