The externally controlled led digital tube with double connecting wires will not have any problems after factory inspection, including long-term aging. However, after the construction of the project, the operation will have different degrees of performance, often showing that the signal caused by the connecting line is not conductive, or the power supply is not conductive, but just touch the connecting line a little. The complete solution to this problem is not to use connecting wires, which is as stupid as "choking on food". Our solution is to use less. Therefore, Jiangbei developed a single-wire connected external control digital tube, which changed the traditional basis of lighting guardrail tube in the south.

The powerful advantages of the new single-wire external control digital tube you will learn are summarized as follows:

1 single-wire data transmission, which makes signal connection more convenient and less prone to line failure.

Built-in double RC oscillation, and clock synchronization according to the signal on the data line, after receiving the data of this unit, it can automatically shape and forward the subsequent data.

Linear drive can be cascaded infinitely, eliminating the controller and saving costs for you.

The transmission distance between any two points exceeds 10 meter, and no circuit is added.

5. The data transmission frequency is 800K/ s, and the picture refresh rate can reach 30 frames/s, not less than 1024, which makes the picture smoother when making a screen.

6 PWM control terminal can realize 256 levels of adjustment, and the port refresh frequency is1.6 khz/s.

7 chip is more powerful, VDD has built-in 5V voltage regulator, and 78L05 and triode are no longer used, which reduces components and solder joints, and greatly reduces the open welding caused by virtual welding and transportation.

8 The output port can bear up to 24V, which greatly avoids the phenomenon of tube burning.

9 The preset constant current mode of 17mA/ channel is adopted. The constant current precision is high, with an intra-chip error of 3% and an inter-chip error of 6%, so that the brightness near the power supply and far away from the power supply is basically the same (more suitable for the screen); More energy-saving, energy-saving 15% or more than similar products, power saving. Each power supply can carry 40 lamps, which reduces the installation cost.

When there is no signal input after power-on, the 10 light is blue.

1 1 It is easy to install a digital tube with internal control due to the use of a single connecting wire; Because it saves electricity, it saves electricity, reduces the cost of installation materials, and also reduces the construction difficulty and cost.