1. Main features of light-emitting diode LED
(1) Working under the conditions of low voltage (1.5~2.5V) and small current (5~30mA), sufficient brightness can be obtained. (2) The luminous response speed is fast (10-7~10-9 s), the high frequency characteristic is good, and the pulse information can be displayed.
(3) Good monochromaticity, common colors are red, green, yellow, orange, etc.
(4) Small size. The shape of the light-emitting surface is divided into circle, rectangle, and special shape (triangle, etc.). Among them, the outer diameter of the round tube has specifications such as p1, (p2, (p3, (p4, p5, p8, p10, p12, p15, p20 (mm), etc.), and the diameter of 1mm belongs to the ultra-micro LED.
(5) Good anti-vibration and impact resistance, low power consumption and long life. Since the PN junction of the LED works in a forward conduction state, the power consumption of the original radio is low. As long as the necessary
