Light efficiency, this index is very important, is that different light sources at the same time, the same power consumption, how much light. That is to say, the same bright light may not consume the same amount of power, and a high-efficiency light source will definitely save more energy than a low-efficiency light source. Dimming technology, using forward current to change the brightness of the LED, is very easy to achieve. The first thing that comes to mind is to change its driving current, because the brightness of an LED is almost directly proportional to its driving current. The simplest way to adjust the current of LED is to change the current detection resistance in series with the LED load. Almost all DC-DC constant current chips have a current detection interface, which is to compare the detected voltage with the reference voltage inside the chip to control the constant current.

Common-Cathode CC 3201AGG 7-Segment digit 3201AGG LED Common-Anode CA 3201BGG Display 3201BGG 0.30 inch
Common-Cathode CC 3021AGG 7-Segment digit 3021AGG LED Common-Anode CA 3021BGG Display 3021BGG 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