![]() The intensity of light depends on the supply voltage and current. When current flows through the LED, it emits infrared IR light. The light sensor converts back the light energy into electrical energy to control a high voltage circuit. The LED is connected to a low voltage circuit that sends a signal by converting it into the light beam. Light emitting diode (LED) is normally used as the light emitter while a light-sensitive device such as a photodiode, phototransistor, thyristor, etc. It is made of a light emitter and a light sensor in a single package. It is used to protect low voltage circuits from high voltage circuits by preventing the hazardous current flow and also eliminating unwanted noise. There is no physical contact (through a conductor) between them e.g. It provides electrical isolation between two circuits that operate at different voltage levels. Advantages & Disadvantages of OptocouplersĪn Optocoupler or an Opto-isolator (also known as photocoupler and optical isolator) is an electronic component that transfers signals using optical path between two electrically isolated circuits through light.It prevents high hazardous voltage flow between circuits, and rectify noise and other distortions between the circuits. There is no physical contact between the circuits but the circuit can be coupled together to transfer energy by other means such as magnetic coupling (transformers) and Opto-coupling using light (optocouplers) etc.Įlectrical Isolation is used to prevent unwanted current flow between two circuits. But have you ever wondered how something so sensitive operating at very low voltage can control such large voltage? The answer is an optocoupler based on “electrical Isolation”.Įlectrical isolation means the introduction of a non-conducting material between the circuits to prevent the direct flow of current. is used to control or regulate high power flow. In electrical and electronic engineering, we often come up with certain circuits where a digital logic circuit such as a microprocessor or microcontroller, etc. Optocoupler or Opto-isolator, Symbol, Construction, Working, Types and Applications
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |