Рет қаралды 607,566
How to determine the parameters of a light-emitting diode on which there is no marking? To do this, it is enough to have a multimeter and a power supply with voltage regulation. The voltage across the current limiting resistor should be applied to the LED and the current should be set to a value of 20 mA using a multimeter reading. Then you need to measure the voltage across the LED's. Such a method does not allow us to determine the specified parameters with 100% accuracy, but it is quite possible to find out approximate characteristics. Another way to know the characteristics of the LED can be in appearance in the catalogs of online stores of electronic components or with experienced radio amateurs.