Optocoupler relay

The optical relay is a semiconductor relay for both AC and DC , It is an integrated device of light-emitting devices and light receiving devices . The input side and output side are electrically insulated , But the signal can be transmitted by optical signal . The optical relay has no mechanical contacts 、 long life 、 Low action current 、 High isolation voltage 、 High speed switching 、 Advantages of low leakage current , It is mainly used in measuring equipment 、 Communication equipment 、 Security equipment 、 Medical equipment, etc .

There are many ways to realize optical relays , But the principle is different , Basically, the transmission of current and voltage is based on the semiconductor characteristics of photosensitive or other photosensitive materials , To achieve the function of switch on and off . And then indirectly realize the function and function of the relay .

The optical relay has a good isolation effect for voltage and current , Therefore, it is often used in circuits with power isolation requirements , Its on-off characteristics determine that it has a certain degree of security and sensitivity , However, due to the reaction of various photosensitive materials, the on-off process will be more linear , When using it, you need to analyze the use requirements and scope of application in detail .

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