WHAT IS COUPLER

What is a coupler? In the microwave system, it is often necessary to divide the microwave power into several paths, which is the power allocation problem. The realization of the function of the components called power distribution components that are coupled, mainly including: directional coupler, power divider and a variety of microwave branch devices.

Photoelectric coupler is a kind of electric power converter, which is based on the optical medium to transmit electric signals. It consists of two parts, the light source and the light receiving device. The light source and the light receiving device are assembled in the same sealed shell body, and are separated from each other by a transparent insulator. The pin of the light emitting source is an input end, and the output end of the light receiving device is a common light emitting diode, a light emitting diode, a light emitting diode, a photosensitive transistor and the like.

There are many kinds of photoelectric coupler, photoelectric diode, triode, photoelectric type photosensitive resistor type, thyristor type, photoelectric Darlington type, integrated circuit etc. are common.