DIY Short Circuit (Overcurrent) Protection

Support me for more videos: https://www.patreon.com/GreatScott Previous video: https://youtu.be/aND0j2Y2IkM Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab More project information (schematic, pictures, ....) on Instructables: https://www.instructables.com/id/DIY-Short-Circuit-Overcurrent-Protection/ Parts list (incomplete, see Instructables for more information, affiliate links): Aliexpress: 1x Relay (12V one with 2 changeover contacts): https://s.click.aliexpress.com/e/_dXytThh 2x PCB Terminal: https://s.click.aliexpress.com/e/_dYbstfZ 1x LM358 OpAmp: https://s.click.aliexpress.com/e/_d6VP6J1 2x BC547 NPN Transistor: https://s.click.aliexpress.com/e/_dU81lmT 1x 5mm green LED: https://s.click.aliexpress.com/e/_dV63r7D 1x 1N4007 Diode: https://s.click.aliexpress.com/e/_dYR45Bh 1x Tactile Switch (NC): https://s.click.aliexpress.com/e/_dXIIMcP 6x 1kΩ, 2x 20kΩ Resistor: https://s.click.aliexpress.com/e/_dTPpXjt 1x 10kΩ Trimmer: https://s.click.aliexpress.com/e/_dTFyPv5 1x 0.1Ω Resistor: https://s.click.aliexpress.com/e/_dZKdSGL Ebay: 1x Relay (12V one with 2 changeover contacts): http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=182591166464&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 2x PCB Terminal: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=171758278263&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x LM358 OpAmp: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=130750396561&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 2x BC547 NPN Transistor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=182523085678&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x 5mm green LED: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=181723557701&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x 1N4007 Diode: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=201415026157&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x Tactile Switch (NC): http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=182506452262&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 6x 1kΩ, 2x 20kΩ Resistor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=401036186511&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x 10kΩ Trimmer: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=182551169452&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 1x 0.1Ω Resistor: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=182383981237&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg Music: 2011 Lookalike by Bartlebeats Killing Time, Kevin MacLeod (incompetech.com) In this project I will show you how to create a simple circuit that can interrupt the current flow to a load when the adjusted current limit is reached. That means the circuit can act as an overcurrent or short circuit protection.