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How to judge whether the LED is broken inside
Speaking of LED digital tube, I think everyone should be familiar with it. It is an electronic device that can display numbers and other information. Display numbers are often used in modeling, and the method is simple. Many feet feel bad and it is not convenient to control them directly with your hands. There are also professional decoders, but the number of pairs has increased. Today, let's talk about how to use nixie tube. Look at the internal schematic first. It can be seen from the following two figures that the inside of the nixie tube is composed of many light emitting diodes (LEDs). Because leds have positive and negative electrodes, nixie tubes can be divided into two types, one is a common cathode, the other is a common anode. The so-called common cathode refers to connecting the negative electrodes of all light-emitting diodes together, and the common anode refers to connecting the positive electrodes of all light-emitting diodes together.
What are the characteristics of LED dot matrix display
LED dot matrix display screen is composed of many semiconductor LED pixels, which are uniformly arranged. Different color LED pixels are made of different materials Red, green and yellow are commonly used. What are the main product features of LED dot matrix display?
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