Electronics Area – Electrical and Electronics Tutorials and Circuits
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Electrical and Electronics Tutorials and Circuits
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Optocoupler (LED and phototransistor)
Optocoupler: LED and phototransistor The Optocoupler is a device that consists of a LED (light-emitting diode) and a phototransistor. When the LED emits light, it illuminates the phototransistor causing a current to flow through it. These two elements are coupled in the…
LED – Light-emitting diode
LED – Light-emitting diode Light-emitting diode (LED) is a special type of diode, that emits light when it is forward biased. There are LEDs of various colors. LED colors depend on the material…
What is a Capacitor?
Capacitors are devices made of two metal plates separated by an insulator or dielectric. Charge, Voltage and Capacitance Relationship