Q:How much is the voltage across the 20 LED lamps in series?

LED lighting general LED lamp belt voltage, conventional specifications are 12 volts and 24 volts, if it is 12 volts, that voltage is 420 volts, if it is 24 volts, that is 840 Volts

Q:What's the average luminous current of an ordinary LED lamp string?

General LED patch to 0.2W, 0.5W, 0.2W lamp current is 60mA, 0.5W beads 150mA,

Q:What is the connection distance of the LED light string?Be specific

LED light string connection distance: in general, the 3528 series of LED lights belt, its connection distance is the longest 20 meters, 5050 series of LED lights string, the longest connection distance is 15 meters

Q:The number of lights in the LED string

Different LED number of LED light band price is different, and this is also to distinguish LED lamp belt price is an important factor.

Q:The top LED lights always burn the bulb in series

A simple circuit based on resistance current limiting can only be adjusted with current resistance.

Q:What's the price of the LED light string?

On the market now, 3014 of 11lm is often priced at between 0.13-0.16. The lamp has stable performance, good brightness, low luminous decay, and color index is much better. 600x600LED panel light 360 beads, which is about 53 yuan.Are basically using 11x23 or 11x26mil chip, chip /pcs lamp about a penny.

Q:Led full-color light string and how to control wiring

Three line full color exposure lamp data signal two, the controller needs two wire negative electrode control, GND signal connected to the DAT surface

Q:The color temperature of LED light string

Refers to a standard blackbody heating, the temperature rises to a certain degree when starting from the color red - Orange - red - white - blue, gradually changed, a light source and the blackbody with the same color, we will at the time of the absolute temperature blackbody called the color temperature of the light source.

Q:Why are there three lines for the controller of the LED light string? What are they?

The four cycles are green, blue and white, and the answer is almost the same as that on the top. But the three colors are strung together

Q:Example: if I want to do a 40 head low voltage lamp string, do 10 lights, 1 loop, transformer is 150MA, then how can I calculate the resistance? The grid is 60 Hz of China's power grid! Give a formula, and then count the examples. What is it?! Thank you

Diode products cannot be calculated by resistors.