Opto coupler
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An optocoupler is an electronic device that transfers electrical signals using light waves, providing electrical isolation between the input and output. It splits or combines transmission data from optical fibers. Optocouplers are categorized based on factors like the number of channels, operating temperature, output voltage, isolation voltage, and packing time. They have various applications, with photoresistor-based optocouplers used in audio due to their linearity, and most providing medium speeds for uses like electroencephalography. High-speed optocouplers are used for computing and communication applications.
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Opto coupler
- 1. OPTO COUPLER PROJECT BY M.N.POOMAGAL PADMASHREE
- 3. OPTO COUPLER IS DEFINED AS An opto-coupler also called as opto-isolator or photolaser is a passive component that can split or combine transmission data (optical power) feom optical fiber. It is an electronic device which is designed to transfer electrical signals by using light waves in order to provide coupling with electrical isolations between the input and output.
- 4. CATEGORISATION OF TYPES : There are many different types of optocoupler the common types are categorised up on the : No of channels Operating temperature Output voltage Isolation voltage Packing time Current transfer ratio
- 5. APPLICATIONS OF OPTO-COUPLER Photoresistor based opto-isolators are the slowest type of opto-couplers,but also the most linear isolators and are used in the audio and music industry. Most opto-isolators available use bipolar silicon phototransistor sensors and reach medium data transfer speed which is enough for applications like electro-encephalography
- 6. HIGH SPEED AND OTHER APPS : High speed opto-isolators are used in computing and communication applications. Other applications : photo copiers Industrial automation Professional light measurement instrument Auto-exposure meters