What are the types of electronic LED light source parameters?

Part M: 12 part number.

lot number.

bin code: Z0312 warehouse number.

iv: 1800-2100mcd luminous intensity.

Forward operating voltage.

x y: j02 beam angle.

Current limiting resistance = (input voltage - forward working voltage) * number of series currents.

Like what; 12V input voltage, 3 LEDs in series, working current, find the series resistance.

12v-（3v*3v）/

Part model number.

lot Date of manufacture.

bin code: Z0312 product bin number.

iv: 1800-2100mcd luminous intensity.

Forward operating voltage.

X Y:J02 The X Y code of color temperature and white light can be requested from this company.

Current Limiting Resistance = Supply Voltage minus Lamp Voltage Drop Divided by Using Operating Current, If 12V Power Supply (12V-3V*3) Euros, 150 Euros, 20% Resistor can be selected.

The types of light sources are as follows: 1. Dichromatic phosphor converts white LED light source Dichromatic white LED is made of blue LED chips and YAG phosphors. The generally used blue light chip is the Ingan chip, but the A1Ingan chip can also be used.

The advantages of the blue chip LED with YAG phosphor method are: simple structure, low cost, relatively simple manufacturing process, and YAG phosphor has been used in fluorescent lamps for many years, and the process is relatively mature. The disadvantage is that the efficiency of blue LEDs is not high enough to make the efficiency of LEDs low; There is an energy loss in phosphors themselves; Phosphors and encapsulants age over time, resulting in color temperature drift and shortened lifespan.

2. Trichromatic phosphor converts white LED light source to effectively improve the color rendering of LED under the premise of high efficiency. The most common way to obtain trichromatic white LEDs is to use ultraviolet LEDs to excite a set of trichromatic phosphors that can be effectively irradiated. This type of white LED has high color rendering, the light color and color temperature are adjustable, and the use of high conversion efficiency phosphors can improve the light efficiency of the LED.

However, there are still some shortcomings in the method of ultraviolet LED + trichromatic phosphor, such as the low efficiency of phosphor in converting ultraviolet radiation; Powder mixing is more difficult; Encapsulation materials are easy to age under ultraviolet light irradiation, and have a short lifespan. 3. Multi-chip white LED light source The red, green, and blue LED chips are packaged together, and the light emitted by them is mixed together, and white light can also be obtained. This type of white LED light source is called a multi-chip white LED light source.

Compared with phosphor conversion white LED, the advantage of this type of LED is that it avoids the energy loss of phosphor in the light conversion process, and can obtain higher light efficiency; Moreover, the light intensity of LEDs of different light colors can be controlled separately to achieve the effect of full-color color change, and better color rendering can be obtained through the selection of LED wavelength and intensity. The disadvantages of this method are that the semiconductor materials of LED chips with different light colors are very different, the quantum efficiency is different, the light color is inconsistent with the driving current and temperature, and the decay speed is also different over time. In order to maintain the stability of the color, it is necessary to compensate and adjust the feedback circuit of the three colors of LEDs separately, which makes the circuit too complicated.

In addition, heat dissipation is also a major problem that plagues multi-chip white LED light sources.

Explanation of LED parameters:

if:1, the definition is the value of the forward current (ifl minimum forward current, ifm forward current median, ifh maximum forward current).

2. Unit mA

3. Conditions of use The normal use conditions of LED are 20mA4, and the limit value ifh allows the maximum forward DC current allowed to be added If this value exceeds this value, the diode can be damaged 5, and the relationship between the current and the relevant electrical parameters.

Explanation of LED parameters:

if: Laughing.

1. Definition: i.e. forward current value (ifl forward current minimum ifm forward current intermediate ifh forward current maximum).

2. Unit mA

3. The normal use conditions of LED are 20mA4, and the limit value IFH allows the maximum forward DC current to be added, and the diode can be damaged if this value is exceeded.

5. The relationship between the current and the relevant electrical parameters.

They all represent brightness, but the reference of expression is different.

The upstairs was very detailed.