Using Photo coupler to achieve isolated transmission of electrical signals has the following advantages:
Electrical isolation: Photo coupler can completely isolate the input and output ends, thereby effectively preventing electrical noise and interference in the input signal from affecting the quality of the output signal. This electrical isolation can prevent voltage interference, current interference, ground loop interference and other problems, providing a clearer and more reliable output signal.
Strong anti-interference ability: Photo coupler transmits optical signals, and optical signals have better anti-interference ability than electrical signals. Optical signals have higher immunity against electromagnetic interference, radioactive interference and inductive coupling interference, thus reducing the possibility of signal quality being interfered with.
Long-distance transmission: Using optical fiber as the transmission medium of Photo coupler can realize long-distance transmission of signals. Fiber optics have low loss and low attenuation characteristics and can transmit signals over longer distances without suffering a large loss of signal quality.
High frequency bandwidth: Optical signals have wide-band characteristics and can transmit high-frequency electrical signals. In contrast, traditional dielectric isolation devices have frequency limitations. Therefore, using a photo coupler to transmit electrical signals can maintain the high-frequency characteristics of the signal.
Excellent electromagnetic compatibility: The use of photo coupler can effectively solve electromagnetic compatibility problems. Due to the isolation between the electrical signal and the optical signal of the photo coupler, electromagnetic compatibility problems caused by leakage and coupling problems of electrical signals can be avoided. This is especially important in certain environments, such as those used in high-demand electromagnetic environments such as medical equipment and communication systems.
In general, using photo coupler to achieve isolated transmission of electrical signals can provide a reliable and high-quality signal transmission method, with many features such as electrical isolation, strong anti-interference ability, long-distance transmission, high-frequency transmission and good electromagnetic compatibility. advantage. Therefore, Photo coupler is widely used in many applications, such as industrial automation, communication systems, medical equipment, etc.
