Types of Optical Semiconductors
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The types of optical semiconductors are as follows :
(1)Light-emitting device ・・・visible-light LED, infrared LED, ultraviolet LED, laser diode
(2)Light-receiving device・・・photosensor, solar cell, CMOS sensor
(3)Composite device(combination of light-emitting element and light-receiving element alignment)・・・photocoupler, fiber coupler
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Chapter V : Isolators/Solid State Relays
Light-Emitting Principal of LEDs
The wavelength range of LEDs
What Is a Photocoupler?
Why Are Photocouplers Necessary?
Types of Photocouplers
Types of Photocouplers (Packages)
Types of Photocouplers (Internal Structure)
Safety Standards of Photocouplers
Characteristics of Photocouplers (Current Transfer Ratio: CTR)
Principal Characteristics of Photocouplers (Trigger LED Current)
Aging Variation Data of Photocouplers
How to Use a Photocoupler
How to Use a Photocoupler “Input Current”
How to Use a Photocoupler “Output Current”
How to Use a Photocoupler “Output-Side Resistor”
How to Use a Photocoupler Check
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