Q:What role does the light controller and driver play in the LED street light component?

At present, light emitting diode driver chip can be divided into constant voltage drive chip, constant current drive chip and pulse driver chip. Among them, constant voltage drive chip is generally our most common DC/DC boost chips. The advantage of this scheme is that chips are cheap and do not have complex peripheral circuits. But only constant voltage drive LED will drive the output current of the circuit is uncontrollable. LED brightness consistency cannot be guaranteed.

Q:How to identify LED street lamps do well or not?

The voltage range of the power supply is generally wide, and the voltage is relatively stable (between 90V-260V).

Q:What is the role of heat phase change material on a LED street light?

Mainly to play the role of heat dissipation! I don't agree with that upstairs. The heat dissipation of LED street lamp can be solved by some auxiliary things. For example, a small fan with a stronger coefficient of heat is used as a shell...... And so on, these can solve the problem of heat dissipation!

Q:How to distinguish whether the LED lamps glare seriously, whether there is a standard?

Glare is not the light source, but the concept of light. At present, led-t8 fluorescent lamp has risen and is replacing PuThrough the fluorescent lamp market, because the lamps and lanterns are ready-made, cannot change, the led-t8 fluorescent lamp needs to the ordinary fluorescent lamp effectAs a result, the concept of glare is produced. Anti glare products need to take into account the brightness of the LED, the rows between the LEDCloth, spacing, led itself to the distance to the optical cover, shape of the optical cover, transmittance, etc., rather than simply outsideA problem of shell or arrangement.

Q:What is the active power of LED street lamp? What is the relationship between input voltage and current and power?

Here, we define the phase angle advance as positive, and the phase angle lag as negative. The actual load is resistance, inductance, capacitance inductance capacitance of three types of complex, composite after referred to as "impedance", written in mathematical is: Z= R+j. where R is the resistance impedance, XL inductance, XC capacitance. If > 0, known as the "perceptual load"; conversely, if < 0 called capacitive load. Alternating current through the inductive load, the phase voltage of the alternating current phase advance; alternating current through the capacitive load, the lag phase alternating current AC voltage; electrical engineering definition of the power factor angle phi angle of power factor angle phi Cos phi is called the cosine value of power factor. For resistive load, the voltage and current of the phase difference of 0 degrees, therefore, the power factor of the circuit is 1 of the maximum; and pure inductance circuit, voltage and current phase difference of 90 degrees, and is a leading current voltage; in pure capacitance circuit, voltage and current phase difference is - 90 degrees. The current leading voltage. In the latter two circuits, the power factor is zero. For a general load circuit, the power factor is between 0 and 1. By mathematical impedance Z=, R+, J, if XL = XC, then Z= R, that is, impedance Z becomes a pure resistor, power factor is equal to 1.

Q:LED street lamp burning black what reason?

For example, when testing, due to the power supply instability caused by instantaneous high voltage, or misoperation caused by large current, static electricity will only occur somewhere above the chip black.

Q:What is the price of the LED street lamp from 30W to 60W? What are the advantages of the LED street lamp?

Light emitting diodes (LightEmittingDiode, abbreviated as LED) is a semiconductor pn junction formed with weak electricity can light high efficiency solid-state light source based on the forward bias voltage and the injected current, injected into the P region of the hole and injected into the N region electron in diffusion into the active region after radiation and emit a photon, electric can be directly converted into light energy.

Q:What is the actual service life of the LED street lamp?

In good heat dissipation, rated current work, with constant flow drive, high quality LED life up to 50 thousand small season

Q:Does the LED street lamp need a starter?

LED light is not a starter, is a constant current source module, is 220V city power rectifier, with constant current circuit to each LED lamp power supply; LED lights can be connected in series, and then parallel. There is also not constant current, but in each series of branch current limiting resistors, to consider the range of voltage fluctuations, select the current resistance resistance value and power.

Q:What is the luminous flux of LED30W solar street lamps?

High power LED street lamp has a long service life, and the light source life is over 50000 hours. It is 5~10 times of traditional lamp. The LED light source adopts the most advanced white 1W package, the surface bonding is welded on the 2mm thick aluminum based circuit board, and then the aluminum substrate is installed on the radiator plane to ensure the rapid heat transfer to the radiator. In addition the radiator and lamp shell integration design, fully guarantee the LED cooling requirements and service life. Advanced packaging technology to ensure high reliability of LED, good heat dissipation to ensure that LED work at the allowable temperature, the combination of the two, fully guarantee the long service life of LED.