To determine the quality of an optocoupler, one can measure the forward and reverse resistance of its internal diode and transistor in-circuit. More reliable detection methods include the following three:
Infrared remote controls have been widely used in color televisions, audio systems, and various household appliances. The control distance of a remote control can generally reach 6 to 8 meters, making it very convenient to use. Due to the large demand for infrared remote control methods, both the infrared transmitting and receiving circuits have complete supporting components
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The rectifier diode in a switching power supply must possess characteristics such as low forward voltage drop and fast recovery, and should also exhibit sufficient output power.
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