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IC Plus, Inc. has been in business over 20 years and is one of the most trusted companies in the industry who stocks Obsolete Optocouplers. Located in Torrance, California, IC Plus is ISO 9001:2008 Certified (pending) . Our commitment to adhering to the highest quality and standards has set us apart from other Optocouplers stocking distributors. To locate the exact part you are looking for, please use our part search tool or, give us call at (310) 378-7715. You can also email us at: sales@icplus.net and a sales associate will be more than happy to assist you.
In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is “an electronic component designed to transfer electrical signals by utilizing light waves to provide coupling with electrical isolation between its input and output”. The main purpose of an opto-isolator is “to prevent high voltages or rapidly changing voltages on one side of the circuit from damaging components or distorting transmissions on the other side.” Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/.
An opto-isolator contains a source (emitter) of light, almost always a near infrared light-emitting diode (LED), that converts electrical input signal into light, a closed optical channel (also called dielectrical channel), and a photosensor, which detects incoming light and either generates electric energy directly, or modulates electric current flowing from an external power supply. The sensor can be a photoresistor, a photodiode, a phototransistor, a silicon-controlled rectifier (SCR) or a triac. Because LEDs can sense light in addition to emitting it, construction of symmetrical, bidirectional opto-isolators is possible. An optocoupled solid state relay contains a photodiode opto-isolator which drives a power switch, usually a complementary pair of MOSFET transistors. A slotted optical switch contains a source of light and a sensor, but its optical channel is open, allowing modulation of light by external objects obstructing the path of light or reflecting light into the sensor.
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