![]() Due to the interaction between the input and output of the optocoupler and the transmission of electric signals is unidirectional, optocoupler has good electrical insulation ability and anti-jamming ability. The conversion of electro-optical-electric then is completed, which plays the role of input, output and isolation. The input electric signal drives LED to emit light of a certain wavelength, which will received by the photodetector and then generate photocurrent, and then is output after further amplification. Optocoupler generally consists of three parts: the light emission, light reception and signal amplification. At present, it has become one of the most widely used optoelectronic devices. They have good isolation for input and output signals, so they are widely used in various circuits. CatalogĬouplers transmit electrical signals on the medium of light. It is widely used in digital circuits because of its strong anti-jamming ability, insulation between output and input, one-way transmission of signal and so on. The optocoupler, which uses light as the medium to couple the input signal to the output end, has the advantages of small size, long life, and no contact point. When the input signal is powered on, the luminator emits light, and the receiver receives the light and generates photocurrent, which flows out from the output end, thus realizing the "electric-optical-electric" conversion. ![]() ![]() It usually encapsulates the luminator (infrared LED) and the light receiver (photosensitive semiconductor tube) in the same shell. Optocoupler (OC), also called optoelectronic isolator or optocoupler, is a device that transmits electrical signals on the medium of light.
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