Do you know the difference between LED lamps and incandescent lamps, and what is the difference in their power consumption:

1. First of all, you must understand that the replacement of LED lamps and incandescent lamps is not simply measured by the number of W. For example, the same 10W LED lights, some are 800 lumens, and some are more than 900 lumens. This needs to understand the concept of "light effect", that is, how many lumens per W emits light.

2. If the luminous flux of a 40W incandescent lamp is 400 lumens, then, according to the luminous efficiency of the LED lamp is 80 lumens/watt, then the LED should be 400/80=5W.

The LED light is an electroluminescent semiconductor material chip, which is cured on the bracket with silver glue or white glue, and then connects the chip and the circuit board with silver or gold wires, and is sealed with epoxy resin around it to protect the inner core wire. Function, only install the shell, so the shock resistance of the LED light is good.

Extended information:

Compared

1. LED lamps have the same stroboscopic phenomenon as ordinary incandescent lamps when driven by alternating current, while ordinary energy-saving lamps do not have stroboscopic phenomenon. Strobe light can easily tire the eyes.

2. The light of each LED bulb is too bright, which will strongly irritate the eyes, do not look directly, even for a short time, while ordinary energy-saving lamps are relatively softer!

3. The irradiation angle is limited, generally it can only irradiate 120°, while ordinary energy-saving lamps can irradiate almost 360°.

4. The brightness of the illuminated room is not better than that of energy-saving lamps, because the LED has high brightness only in a narrow angle of direct viewing, and the light rapidly weakens after deviating from this angle.

Therefore, the advantages of LED energy-saving lamps as indoor lighting lamps may not be more obvious than ordinary energy-saving lamps, but they are still very effective when used as lamps, such as torches, desk lamps, and spotlights that only need to illuminate a narrow angle.

life

Constant current source drive is the best way to drive LED, using constant current source to drive, no need to connect current limiting resistor in series with output circuit;

The current flowing through the LED is also not affected by the change of external power supply voltage, the change of ambient temperature, and the discreteness of LED parameters, so that the current can be kept constant and the various characteristics of the LED can be fully utilized.

The LED constant current power supply is used to supply power to the LED lamps. Since the current flowing through the LED will be automatically detected and controlled during the operation of the power supply, there is no need to worry about excessive current flowing through the LED at the moment of power-on, and no need to worry about the short circuit of the load. bad power supply.