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LED light strip color classification

2021-12-16 15:43:19
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LED light strip color classification

Drive control is divided into two categories:

CC = constant current control, constant current control is subdivided into: external constant current power supply drive control / electronic components constant current drive.

①: The external constant current power supply drive control means that the power supply and various electronic components + constant current IC are integrated to drive the light board (the light board only has LED light sources, and there are no electronic components).

②: The constant current drive of electronic components is the light board + constant current IC + LED light source as a whole.

③: CV=constant voltage control is composed of light board + LED light source + current limiting resistor.

light strip

2: RGB colorful

RGB light strip means that each LED light bead is composed of (R) red, (G) green, (B) blue three chips, they can emit (R) red, (G) green, (B) blue and other three chips. It is a kind of monochromatic light, and it can also be composed of two color mixed light RG (yellow light), RB (purple light) and GB (cyan-yellow light). At the same time, three chips can also emit light together to form a white light. Commonly known as "Colorful"

3: Symphony

①: The phantom light strip is divided into two kinds of DMX/SPI control signals; DMX512 is a parallel signal, its advantage is that when the signal of a pixel point in front is interrupted or damaged, it does not affect the subsequent signal transmission, and the disadvantage is a control port If only 170 pixels can be connected to expand, it can control 512 pixels; SPI is a serial signal; its advantage is that one control port can connect 1024/2048 pixels, but the disadvantage is that when a pixel signal is interrupted or damaged, the signal will It cannot be transferred to the next pixel, and it will not work properly later.

②: DMX512 is divided into single-line/double-line differential signal control. There are four lines for single signal, such as: VCC (+) PI A/D+ GND (-); the signal line is represented by the letter A/(D+), and the address is written The line is represented by the letter PI; there are five lines for the dual signal, such as: VCC(+) PI A/D+ B/(D-) GND(-); the signal line is represented by the letter A/(D+) data positive and B/( D-) The data negative pole is represented, and the write address line is represented by the letter PI.

③: SPI control signal is divided into single line and double line. The single line has three lines: VCC (+) DAT (data line) GND (-); double line is divided into VCC (+) DAT (data line) CLK (clock line) GND (-) Resume with breakpoint: VCC (+) DAT1 (main data line) DAT2 (auxiliary data line) GND (-); the advantage of breakpoint resume is that when a pixel signal is interrupted or damaged, it will not affect the following The pixels work normally, but when two adjacent pixels interrupt the signal at the same time, there is no way to transmit the signal later, and it cannot work normally.


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