When the forward current is 350mA, the color temperature is 5734K, and when the forward current increases to 350mA, the color temperature shifts to 5636K. As the current decreases further, the color temperature changes to a warmer color. Of course these problems in general actual lighting may not be a big problem. However, in the RGB LED system, it will cause color deviation, and the human eye is very sensitive to color deviation, so it is not allowed. Modulating current can cause serious problems that make the constant current source not work, but in practice, modulating light by modulating forward current can cause a more serious problem. LED is usually driven by dC-DC constant current drive power supply, and this kind of constant current drive source is usually divided into boost type or buck type two (of course, there are lift pressure type, but because of low efficiency, expensive and not commonly used).

Common-Cathode CC 3203AGG 7-Segment digit 3203AGG LED Common-Anode CA 3203BGG Display 3203BGG 0.30 inch
Common-Cathode CC 3201AW 7-Segment digit 3201AW LED Common-Anode CA 3201BW Display 3201BW 0.30 inch


The light source with Ra 100 value
The standby LED lighting of emergency
LED light source index and average life
LED incandescent lamp color response
Color performance of LED light source
Color temperature LED source irradiation
Change the brightness of the LED
LED chips provide control voltage interface
In the RGB LED system
LED supply voltage and load voltage