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Oct 16, 2018

The cabbage fields on the north and south sides of Lao Zhang are divided into three parts. Lao Zhang hopes to change through a one-time waterway, and each part gets a small part of the water flow from the main waterway. The water flow speed is the same as other grounds, as shown in Figure 1. Show., that is, couplers, and mainly include: directional couplers, power splitters, and various microwave branch devices.

An optocoupler is an electric-optical-electrical conversion device that transmits electrical signals by means of light. It consists of two parts: a light source and a light receiver. The light source and the light receiver are assembled in the same sealed casing and separated from each other by a transparent insulator. The pin of the light source is the input end, and the pin of the light receiver is the output end. The common light source is a light emitting diode, and the light receiver is a photodiode, a phototransistor, and the like. There are many types of photocouplers, such as photodiode type, phototransistor type, photoresistor type, light control thyristor type, photoelectric Darlington type, integrated circuit type, etc. As shown in Figure 1 (the shape has a metal round shell package, plastic double line inline, etc.).

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