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Q: Solar LED street lamp, how much is a set of solar street lamps wholesale price?: Solar street lighting controller is divided into two buck and step-up, Buck 50 yuan, step-up 80 yuan, the warranty for three years. Yangzhou is the largest production base of street lamps in China, which can be visited by manufacturers.

Q: How to identify LED street lamps do well or not?: Overall, 1 lumens per watt lamp (what is the value of the lamp lumens not) are now generally more than 85LM.2, the light distribution curve of the lamp is how, now popular is bat wing light effect.

Q: Do you know the assembly process of the LED street lamp?: The visual appearance of a lamp shade, a lamp cup, no scratch, burr, crack, deformation and other undesirable phenomena. Take a set of samples for trial installation to confirm the size and location of the screw holes in the fittings. Visually check whether the circuit board and the polarity of the components are clearly defined; whether the copper foil is bulged or not; use the multimeter to test whether the circuit (aluminum substrate) has an open circuit or a short circuit. Check the LED luminous color and brightness, color temperature is consistent with the required, LED light surface scratches, whether the welding pin is bright. Load power supply parameters and actual values confirm whether consistent. 3 aluminum substrate screws, Palm / white two 6cm long power cord is appropriate?.

Q: What is the active power of LED street lamp? What is the relationship between input voltage and current and power?: When the alternating current through the load resistor, and the resistance of the AC voltage and AC current through the resistor is the same phase, and between them the phase angle phi = 0 degrees, while the active power consumption in the resistive load, power grid to supply energy. When the alternating current through the pure inductance load, phase AC voltage on the advanced phase of current 90 degrees and the angle between them phi = 90 DEG, produce reactive power in inductive load, power supply of electric energy in the inductor for temporary storage and magnetic energy back to the grid into electricity such a periodic cycle, results for grid is not energy, so that the "reactive power", but "reactive power" and "reactive current" still exist. When alternating current through pure capacitance load, also similar to this, but the phase AC voltage on the lag phase of current 90 degrees and the angle between them phi = - 90 degrees.

Q: What is the principle of constant current power supply in LED street lamps?: Inductors, coils, transformers, these inductors are switching power components, one of the main characters,The role is to assume load or pressure, isolation, filtering and so on.All other components, resistors, capacitors, and protective elements are used.

Q: The width of the road is 20 meters, the distance of the street lamp is 25 meters, and the number of tiles is led. How much is the pole?. How to calculate?: General road light source is about 250W,If you use LED, there are enough 72---108W, but the earlier to buy more expensive lights, in terms of long-term interests, LED to energy-saving much more cost-effective.The lamp pole is 7----12 meters high and the distance is 30----45 meters.Zhejiang Yao Liang lighting specializing in the production of various types of outdoor lights.

Q: The design idea of LED intelligent energy-saving street lamp: Sound control is not recommended...The timing control circuit can be added in the driving power source to adjust the current supply of the LED light source to realize intelligent dimming.The advantages of this approach are relatively easy to implement and low cost.

Q: How much is the price of the LED street lamp?: Photovoltaic street lamp environmental protection, safety, long life, can be made according to user requirements.

Q: What is the problem of flashing LED street lights on the side of the road?: If all the lights of the LED are flashing, it is likely that the supply current and current are not normal

Q: The 6 meter high watt LED bulb lamp should match: Generally equipped with 30W led, Yangzhou is the country's largest production base of street lights, manufacturers can visit to see.

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