Gikfun OPTOCOUPLER DIP-4 PC817C PC817 for Arduino DIY (Pack of 20pcs) AE1143

[Music] hello welcome to ludecke science in this video we will learn what are and how to use these little devices known as optocouplers the optocoupler can be compared to a transformer it has an input and an output and what happens at the output depends on what happens at the input however they are isolated electrically from each other as you know the input is connected to the primary coil and the output to the secondary coil but these coils are not connected to each other they are only Copland through the magnetic field that flows through the core of the transformer this provides security because all secret that is connected to the secondary is electrically isolated from the current of the mains which can be dangerous this video is sponsored by TLC PCB GLC PCB is a company that makes excellent quality PCBs at an unbeatable price you can order boards online in minutes after registration