Electromagnetic interference is easy to produce, and sometimes even the human ear can hear the noise. Important task of LED drive circuit; Voltage boost, inductance boost and charge pump boost are two different topological modes.
White 7seg Display Seven Segment
LED 0.28 inch 0.28" 4 Digit Four CA CC
Red Ultra Bright 5x8 LED
Dot Matrix Display 3.0mm Diameter 1.48 inch 1.5 CA Anode
Yellow Green LED 7 Segment
3.0-inch 3.0" 1 Digit Single Display Common Cathode CC 3inch
White 7-Seg Display Seven Segment
LED 1.5 inch 1.5" 1 Digit Single CA CC
Blue 5x8 Dot Matrix Display
LED 10mm Diameter 4.8 inch Common Anode
Green 7 Segment LED Display
3 inch 3" Single Digit 1 7-seg CC CA 3inch
Yellow LED Seven Segment Display
0.52" Four Digit 4 Common Cathode CC
White 5x8 Dot Matrix Display
LED 3.0mm Diameter 1.48 inch 1.5 Anode Cathode
Orange Seven Segment LED Display
0.56inch 0.56" Single Digit 1 Common Anode CA
Blue 7 Segment Display LED
7-Segment 0.39" 2-Digit Dual Common Anode CA
Protection: the lamp is installed outside, the power structure should be waterproof, moisture-proof, and the shell should be sun resistant. LED power supply is an important factor affecting LED lamps and lanterns. The life of the driving power supply should be matched with the life of LED. This has a great impact on the LED lamp, and if there is a problem with the power supply, the consequences can be devastating.
3301AGG 7-segment
3301AGG LED
3301BGG Display
3301BGG
From 2010 to 2012, the size of LED chip came within 1mm, and 2121 lamp bead (an RGB pixel unit composed of 3-4 chips with a size of about 2.1mm) began to mature. P2.5 LED screen with small spacing (point spacing 2.5mm) was also put on the market, and the nearest viewing distance suitable for human eyes came to about 2-4m. LED display from outdoor to indoor, the subsequent 1010 lamp bead is the main model, so that the point spacing is further reduced to 1-2mm; Standing at the current point, we can see that in 2020, the mainstream size of LED chip will come within 200um, 100um will also start to break through, and the display below P0.9 will become mature.
5202AGG LED
5202AGG 0.50 inch
5202BGG 7-Segment
5202BGG Display
