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Festival lights are connected by a number of light bulbs connected to the lighting circuit
- lighting voltage of 220V, 10 "220V, 15W" series connected to the lighting circuit, the voltage of each bulb is 22V, lower than the rated voltage of the bulb, the bulb will not normally shine. Therefore, B errors
The sign and meaning of energy saving lamp
- The identification name is: China energy efficiency label (English name CHINA ENERGY LABEL), including the following contents:s
Does common energy-saving lighting have harmful radiation?
- Now many electronic devices have electromagnetic radiation, but the radiation is controlled in a safe ranges
The festival lights are strung together by a number of small light bulbs connected to the lighting circuit
- he voltage of each bulb was 22V, exceeding the rated voltage of the bulb, the bulb will be burned out. The A error.s
Lamps, fluorescent lamps, lighting appliances, energy-saving fluorescent lamps arranged in order
- . I do my homework in the light, small lamp lights always put its bright on my desk, I silently for lighting, never ask you for a little return; whenever I encounter difficulties in learning, the heart is a mess, raised his head to look at it, then light like a small lamp is issued a kind of Magics
What are the main technical measures for the implementation of energy-saving lighting?
- To make full use of natural light is one of the important ways to save the energy consumption of lighting, that is to say, electrical designers should consider the full combination of natural light and artificial lighting as far as possible, so as to save lighting energy.s
Every home needs lighting bulbs, which are popular on the market now
- two kinds of lamps all work normally, 5000h, the incandescent lamp needs to pay 180 yuan electricity charge, the electronic energy conservation lamp needs to pay 33 yuan electricity charge;s
In the application of the following electrical appliances, what is said is incorrect
- C lighting circuit, the lights and other electrical connection between are parallel, so the option C with B.s
What's the price of led downlight
- There are many advantages of led downlight.For example,1,Security:LED is supplied by low-voltage power, so it is safer than supplied by high voltage power ,it is particularly appli...
Cheap led downlights become more and more polular
- They are one of very few specialist "fibre optic" lighting suppliers left in the country, our knowledge and experience in this fields is second to none hence the increase...
How big is a traffic light
- Traffic light is everywhere in our daily life. Every day you drive your car to commute, you will find out a traffic light on street. It is so familiar in our life, so that everyone...
How do the flashlights work from the aspects of diode
- A flashlight, it is a kind of handheld electronic lighting tools. A flashlight typically have a via a battery-powered light bulbs and focused on the mirror, and a hand-held shell f...
What's led strobe light bar
- Led strobe light bar can be used at Truck, bus, off road vehicle, atvs, boat, engineering vehicles(excavator,treedozer,road roller,bulldozer,crane and mining truck etc.), special v...