LED strip features:
1, super high brightness: double row design, 500lm / m;
2, curved surface illumination: dome-type light refraction technology, light color is more uniform;
3, anti-dead beads design: series and parallel lines, performance is more stable;
4, anti-surge power supply: effectively avoid the impact of instantaneous high voltage on the lamp belt to protect the safety of family electricity;
5, opening and closing type buckle: patented technology, easy to install, safe to use, strong connection;
6, tick mark: unique meter scale, convenient terminal sales.
The most commonly used specifications for LED strips are 12V and 24V. 12V is a 3-string multi-channel parallel structure, and 24V is a 6-string multi-channel parallel structure. Since LED strips are to be connected, each strip is specific. How long can be connected, and the width of the line and the thickness of the copper foil have a great relationship with the design.
Because the current intensity per unit area can be related to the cross-sectional area of the line, if this is not taken into account when wiring, the light strip will be over-current when the connection length exceeds the current that the line can withstand. The heat, while damaging the circuit board, also reduces the service life of the LED.
Since the LED strips are series-parallel, when a short circuit occurs in a certain group of loops, the other LED voltages in the same group will rise, the brightness of the LED will increase, and the corresponding heat will increase. . The most obvious is that in the 5050 strip, when the 5050 strip has a short circuit in any of the chip loops, the current of the one that causes the short circuit doubles, that is, 20mA becomes 40mA, and the brightness of the bead It will become very bright, but at the same time the amount of heat will increase dramatically, and the board will burn out in a matter of minutes.
However, this problem is relatively concealed, and generally it is not very noticeable, because the short circuit does not affect the normal illumination of the lamp strip. If the employee in charge of the test only pays attention to whether the LED is illuminated, not to check the brightness abnormality, or not to do it. Appearance inspection, only for electrical testing, will often ignore this problem, which is why many LED light strip manufacturers always encounter customer complaints that the product is hot but can not find the reason.