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Schematic diagram of an opto-isolator showing source of light (LED) on the left, dielectric barrier in the center, and sensor (phototransistor) on the right [note 1]. 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. [1]
Optocouplers are used within a system to decouple a function block from another connected to the power grid or other high voltage, for safety and equipment protection. For example, power semiconductors connected to the line voltage may be switched by optocouplers driven from low-voltage circuits, which need not be insulated for the higher line ...
Electronic light sensors. Optoelectronics (or optronics) is the study and application of electronic devices and systems that find, detect and control light, usually considered a sub-field of photonics.
A widely used artificial food dye could soon be outlawed. The U.S. Food and Drug Administration (FDA) is moving to ban an artificial food coloring called Red No. 3, also known as Erythrosine. The ...
Opto-isolator VTL2C1 with LED input and photoresistor output. Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator [notes 1] or lamp-coupled photocell, [1] is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically ...
The FBI had at least 26 confidential informants on the ground in Washington, DC, during the Jan. 6, 2021 storming of the Capitol — most of whom engaged in illegal activity during the chaos, the ...
The individual is a resident of southwestern Louisiana and is currently hospitalized. The department is coordinating with the Centers for Disease Control and Prevention (CDC) on the epidemiologic ...
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