2022_News_hoffmann-tech.cn

2022-12

How LEDs are Different

 2022-12--27

LED lighting is very different from other lighting types such as incandescent and CFL. Key differences include: Light Source: LEDs are the size of a fleck of pepper, and can emit light in a range of colors. A mix of red, green, and blue LEDs is sometimes used to make white light. Direction: LEDs emit light in a specific direction, reducing the need for reflectors and diffusers that can trap light. This feature makes LEDs more efficient for many uses such as recessed downlights and task lighting. With other types of lighting, the light must be reflected to the desired direction and more than half of the light may never leave the fixture. Heat: LEDs emit very little heat. In comparison, incandescent bulbs release 90% of their energy as heat and CFLs release about 80% of their energy as heat. Lifetime: LED lighting products typically last much longer than other lighting types. A good quality LED bulb can last 3 to 5 times longer than a CFL and 30 times longer than an incandescent bulb.

21

2022-11

Do LED Lights Really Save Money?

 2022-11--21

Do LED Lights Really Save Money? For years, research has circulated that LED lights are more energy-efficient and better for the environment. But can these light bulbs really save you money? You should strongly consider swapping out your traditional light bulbs for LED light bulbs to save money on your electricity bill. LEDs, or light-emitting diodes, use semiconductors to convert energy into light. When they were first released, LEDs were expensive and had short lifespans. Now, they last much longer than traditional light bulbs and use up to 90% less energy. In fact, traditional light bulbs can cost significantly more over time. A study found that a household with 20 conventional light bulbs could save around $1,000 over ten years by switching to LED lights. Additionally, LED light bulbs can last up to ten years, while traditional light bulbs have an estimated lifespan of only one or two years. LED lights are cost-efficient and versatile. Whether you’re looking to upgrade the lighting in your home or find cool lights for your Christmas tree, switching to LED lights is one of the best ways to trim down your electricity bill. While shopping for the best LED light bulbs, determine the wattage you need and the lighting temperature you’d like for your environment. If you’re looking to further cut down your electricity bill, you can also consider unplugging your appliances or disconnecting your electronics to save some money.

25

2022-10

BEST SMART HOME LIGHT BULBS

 2022-10--25

BEST SMART HOME LIGHT BULBS Smart lighting is one of the most reliable ways for you to get a smart home and a more convenient and attractive place to live in. Not only do smart light bulbs add to the convenience of lighting up your home, but they also help you to save when it comes to energy costs, can act as a safety night light, a security light when away from home, or even just having there canton of your lights turning on as you pull up on the drive. Considering the variety of smart bulbs available in the market, making the right purchase can be challenging, which is the reason I am here to guide you on how to make the right choice. Read on, as here is a review of the best smart home light bulbs that you should consider. Be sure to read our guide after the table which provides advice and tips to help you determine the right bulb to buy.

08

2022-10

What is a solar portable power station?

 2022-10--08

What is a solar portable power station? A solar portable power station is a device that uses solar panels to create electricity. The power station can be used to charge batteries or to provide power to devices such as laptops and phones. Solar portable power stations are becoming more and more popular because they are environmentally friendly and they are an easy way to generate electricity wherever you are. How does a solar portable power station work? A solar portable power station is a battery-powered device that can be used to generate electricity from solar energy. They are small, lightweight, and easy to carry around, making them a great choice for emergency or travel purposes. The power station typically consists of a solar panel, battery, and charging system. When sunlight hits the solar panel, it converts the energy into electrical current. This current is then stored in the battery, which can be used to power devices such as lights or laptops when needed.

05

2022-09

Which color light is good for plant growth?

 2022-09--05

Different colors affect the growth of the marijuana. For eg Gree color is the most unsuitable color for plant growth. Likewise, Blue is the best for vegetative stage of the marijuana. You can combine blue color with red for the flowering stage. The best part about LED grow lights is that many of them come with a switch for bloom and veg.

29

2022-08

LED ,what you know

 2022-08--29

LED, in full light-emitting diode, in electronics, a semiconductor device that emits infrared or visible light when charged with an electric current. Visible LEDs are used in many electronic devices as indicator lamps, in automobiles as rear-window and brake lights, and on billboards and signs as alphanumeric displays or even full-colour posters. Infrared LEDs are employed in autofocus cameras and television remote controls and also as light sources in fibre-optic telecommunication systems. The familiar lightbulb gives off light through incandescence, a phenomenon in which the heating of a wire filament by an electric current causes the wire to emit photons, the basic energy packets of light. LEDs operate by electroluminescence, a phenomenon in which the emission of photons is caused by electronic excitation of a material. The material used most often in LEDs is gallium arsenide, though there are many variations on this basic compound, such as aluminum gallium arsenide or aluminum gallium indium phosphide. These compounds are members of the so-called III-V group of semiconductors—that is, compounds made of elements listed in columns III and V of the periodic table. By varying the precise composition of the semiconductor, the wavelength (and therefore the colour) of the emitted light can be changed. LED emission is generally in the visible part of the spectrum (i.e., with wavelengths from 0.4 to 0.7 micrometre) or in the near infrared (with wavelengths between 0.7 and 2.0 micrometres). The brightness of the light observed from an LED depends on the power emitted by the LED and on the relative sensitivity of the eye at the emitted wavelength. Maximum sensitivity occurs at 0.555 micrometre, which is in the yellow-orange and green region. The applied voltage in most LEDs is quite low, in the region of 2.0 volts; the current depends on the application and ranges from a few milliamperes to several hundred milliamperes. The term diode refers to the twin-terminal structure of the light-emitting device. In a flashlight, for example, a wire filament is connected to a battery through two terminals, one (the anode) bearing the negative electric charge and the other (the cathode) bearing the positive charge. In LEDs, as in other semiconductor devices such as transistors, the “terminals” are actually two semiconductor materials of different composition and electronic properties brought together to form a junction. In one material (the negative, or n-type, semiconductor) the charge carriers are electrons, and in the other (the positive, or p-type, semiconductor) the charge carriers are “holes” created by the absence of electrons. Under the influence of an electric field (supplied by a battery, for instance, when the LED is switched on), current can be made to flow across the p-n junction, providing the electronic excitation that causes the material to luminesce.

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2022

2023

How LEDs are Different

Do LED Lights Really Save Money?

BEST SMART HOME LIGHT BULBS

What is a solar portable power station?

Which color light is good for plant growth?

LED ,what you know