How Optocouplers work - opto-isolator solid state relays phototransistor

The video tutorial explains opto couplers, also known as opto isolators, and their role in electronic circuits. It covers the components and functionality of opto couplers, including their ability to isolate circuits and protect them from voltage spikes. The interaction between LEDs and photo transistors is detailed, highlighting the semiconductor properties that enable this process. The tutorial also provides practical examples of circuits using opto couplers, such as those with light-dependent resistors and infrared emitters, demonstrating their application in controlling and automating circuits.

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