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http://learningaboutelectronics.com/Articles/Optocoupler-circuit.php An opto-isolator (also called an optocoupler, photocoupler, or optical isolator) is an electronic component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators … See more The value of optically coupling a solid state light emitter to a semiconductor detector for the purpose of electrical isolation was recognized in 1963 by Akmenkalns, et al. (US patent 3,417,249). Photoresistor-based … See more An opto-isolator contains a source (emitter) of light, almost always a near infrared light-emitting diode (LED), that converts electrical … See more Resistive opto-isolators The earliest opto-isolators, originally marketed as light cells, emerged in the 1960s. They employed miniature incandescent light bulbs See more • Galvanic isolation See more • S. Ananthi (2006). A text book of medical instruments. New Age International. ISBN 81-224-1572-5. • Avago Technologies (2010). Safety Considerations When Using Optocouplers and Alternative Isolators for Providing Protection Against Electrical Hazards. … See more Electronic equipment and signal and power transmission lines can be subjected to voltage surges induced by lightning, electrostatic discharge, radio frequency transmissions, switching pulses (spikes) and perturbations in power supply. Remote lightning … See more Usually, optocouplers have a closed pair configuration. This configuration refers to optocouplers enclosed in a dark container wherein the source and sensor are facing each other. See more WebMay 3, 2024 · Opto Tech Corporation (OPTOTECH) has been offering optoelectronic semiconductor integrated solutions, from epitaxial materials and chips manufacturing, … cannot print to local printer while on vpn