Unpacking the Six Key Attributes of LED Lighting

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Energy Saving Features

LED light source with high luminance efficiency

The luminous efficiency of different types of light is as follows: Incandescent lights are 10-15lm; tungsten-halogen is 12-24lm/watt; fluorescents 50-90lm/watt; sodium is 90-140lm/watt. Most of the energy consumption is due to heat loss.

LED light efficiency: It emits 50-200 lumens/watt and has a narrow spectrum and good monochromaticity. It can emit visible colored light directly without any filtering.

2.LED light source consumes less power

Single LED tube power ranges from 0.03-0.06 Watts when driven by DC. The single tube voltage is between 1.5-3.5 Volts. The current 15-18 mA is a high-frequency device that has a quick response time and enables it to be operated with varying frequencies. The power consumption of LEDs is one tenth that of incandescent tubes and fluorescent lamps when used for the same lighting effects. In Japan, it’s estimated that LEDs are twice as energy-efficient as fluorescent bulbs, and can replace up to half of the incandescent lamps in Japan. This would save 6 billion liters crude oil each year. The power of a fluorescent lamp that has the same effect as an LED is 18 watts. .

LED light source is long-lasting.

Electronic light field radiation is used to produce light in fluorescent lamps, tungsten halogen bulbs, and incandescent lamps. The filament is susceptible to heat deposition and light loss. It emits light. LED lamps are small, lightweight, and encapsulated with epoxy resin. They can withstand high strength mechanical impact.

Safety and reliability are high.

It is safe to touch and has a low calorific value. It can control the angle and pattern of light with accuracy.

Environmental protection is a benefit of LED light sources

LEDs are solid-state lights that emit light. They are impact-resistant, recyclable, have no pollution and reduce the production of harmful gases like sulfur dioxide and nitrides. This is a “green light source.”

There are currently three technologies for producing white LEDs: one, which uses the principle of three primary colors and the three ultra-high brightness LEDs of red, green, and blue that can be produced to mix the light intensity in a ratio of 3:1:6 to produce white; the other, which uses ultra-high-brightness LEDs Highly InGan blue LED, with a small amount of yttrium-diamond-granite-based phosphor added to the tube, it can produce yellow-green light under blue light excitation, and this yellow-green light can be combined with the transmitted blue light to synthesize white light. All three are incompatible to ultraviolet light. Light LEDs use ultraviolet light to excite phosphors of three primary colors or other phosphors in order to produce a white light with multiple colors.

LED light source is energy-saving

Energy savings is the primary reason we are considering LEDs. LEDs are more expensive than conventional light sources. However, using the energy savings to pay back the investment will result in a net return of up to several times that amount in four to nine years.

Life of Lights

The best way to drive leds is with constant current sources. When using constant current source drive, it is not necessary to connect a resistor that limits the current in series with output circuit. The LED current is not affected externally by changes in voltage, temperature, or LED parameters. The LED current is kept constant, allowing the many excellent features of the LED to be fully utilized.

LED lamps are powered by a constant-current LED power supply. The LED current is detected and controlled automatically during the operation of the power source, so there is no worry about an excessive current flow through the lamp at the time of powering on or a short circuit. Power supply failure.

Lamp housing

LED lights are known for their high efficiency, long lifespan and environmental protection. People who use LED lights often will notice that LEDs can be very hot because they are so bright. If the LED is unable to dissipate its heat as quickly and efficiently as possible, it will have a shorter lifespan.

LED manufacturers often use aluminum cases for LED lamps. Aluminum casings have a beautiful look, are lightweight and easy to dissipate the heat. Aluminum casings are used in many high-end electronics. The company’s “Mac Pro” high-end notebook computers use an aluminum casing for heat dissipation. This means that the computer doesn’t need a fan.

Aluminum shells can extend the life of the LED wick, and also make it look more beautiful. The aluminum lamp cup, however, is expensive and has a high production cost. The lamp cup must be turned on a lathe. Some LED lights of high and medium quality will have aluminum housings.

Plastic housings are another common housing for LED lamps. Some low-end LED lights use plastic shells because they are inexpensive. Plastic shells do not dissipate heat well, and they tend to melt or sublimate when heated, producing harmful gases. Europe, North America and Japan don’t use plastic casings. Plastic casings are popular in certain areas of the country due to the high demand for LED lights.

Household lamp

LEDs can be used to replace spiral light bulbs or energy-saving lights, with wattages ranging from 5-40 Watts. Some lamps are able to replace even higher-power bulbs as of 2010. A 13-watt bulb, for example, has the same brightness of a 100-watt lamp. Incandescent bulbs have an efficiency of 14-17 lumens/watt depending on the size and voltage. EU standards require that an “energy-saving lamp” equal to a 60 watt incandescent bulb must have at least 806 lumens.

The majority of LED bulbs are non-dimmable. However, some have dimmers that can be used and have a narrower illumination angle. The price of these bulbs has decreased from $30 to only $50 since 2010. LED bulbs are more energy efficient than energy-saving light bulbs, and can last up to 30,000 hrs if the heat is properly dissipated. Energy-saving bulbs have a life expectancy of about 8,000 to 9,000 hours. Incandescent light bulbs have a lifetime of around 1,000 hours. LED bulbs are able to be used for up to 25 years and their brightness does not decrease over time. Energy Star standards stipulate that after a lightbulb has been used for 6,000 hrs, its brightness should decrease by 10% and in the worst case, not more than 15%. LED bulbs do not contain mercury, unlike fluorescent lamps. LED bulbs are available in a variety of colors. The higher price of LED bulbs is offset by the lower cost of electricity and maintenance.

Special Purpose

White LED bulbs have high efficiency and are a leader in the low-power consumption market (such as flashlights or solar garden lights for pedestrian street lighting, bicycle lights etc.). Traffic lights and holiday lighting are frequently made with single-color LEDs.

LED lights were a popular topic in 2010 for horticulture, agriculture and other related circles. NASA was the first to use LED lights in space for indoor gardening. These planting lights have been designed to emit light waves that are identical to the wavelengths of chlorophyll. It not only encourages growth but also reduces the light waves which are not absorbed and cause waste. These lights were designed to take into account both red and blue, as only these two colors are required for photosynthesis in the visible spectrum. These LED lights are more suitable for indoor growing than similar products because they can produce the same brightness, don’t require a ballast and produce less heat. A reduction in heat can help reduce evapotranspiration and thereby the number of fillings. Plants should not be watered too much when using these lights.

Guide to buying

  1. Choose LEDs with the “Three Guarantees”, and lamps that have the CCC certification mark.
  2. The LED lamp productlabels must be complete. Labels should be placed on all products.
  3. The CCC mark is a safety certification that you can look for on the LED power cord.
  4. The live metal parts of the lamp should not be touched. The metal lamp holder should not be touched by fingers after the light source has been installed.
  5. Check if the LED chip is in the correct position, and if the lens or screen has worn out.

Damage caused

  1. The voltage is unstable. A sudden increase in power supply voltage can cause LED lamps to be damaged. A sudden voltage increase can be caused by a number of factors, including faulty power supplies or incorrect usage. Power supply voltage can suddenly increase. high.
  2. This is caused by a short circuit in the power supply of the lamp. It is caused by a component or short circuit in another wire that increases voltage at this location.
  3. The LED may be damaged by its own quality, causing a short-circuit. This voltage drop then spreads to the other LEDs.
  4. The lamp’s heat dissipation is bad. The lamp’s lighting is actually a process of heat dissipation. The characteristics of LEDs will easily degrade if the temperature in the lamp is high. The LED lights can be damaged by this.
  5. Water is conductive and will cause the lamp to short-circuit.
  6. Static electricity has damaged the LED’s interior due to a failure to perform anti-static work. It is easy to damage the LED even if voltage and current are normal.

The common causes of LED flickering and their solutions

Normaly, the human eye is able to detect flickering light up to a frequency 70 Hz. However, it cannot detect frequencies above this. In LED lighting applications, If the pulse signal contains a low frequency component, with a lower frequency than 70 Hz the human eye can feel flicker. There are several factors that can cause LED lights flicker in certain applications.

In offline LED lighting applications with low power, an isolated flyback is a common topology.

The flyback regulator’s sinusoidal square-wave power conversion does not supply constant energy to primary bias. This can cause the dynamic self-power (DSS)) circuit to activate, causing the light to flicker.

In order to avoid this problem, it is necessary that the bias circuit be partially discharged at each half-cycle. The values of the resistors and capacitors in the bias circuit must be selected accordingly.

Even LED drivers with excellent power factor correction that support TRIAC dimming require electromagnetic interference (EMI).

The TRIAC step causes a transient current that will cause the inductor to resonate and the capacitor to resonant in the EMI filter.

The TRIAC will shut off if this resonant feature causes the input current drop below the TRIAC hold current. After a brief delay, the TRIAC will usually turn on again and stimulate the same resonance.

The LEDs will flash if this sequence of events occurs multiple times in a half-cycle of the input waveform. In order to solve this problem, a requirement for TRIAC dimming would be that the input capacitance is very low. This capacitance must also be decoupled from the winding impedance by the TRIAC.

The formula states that if the capacitance of the dimming circuit is reduced, then the resistance in the resonant system can be increased. This in turn will suppress oscillations and restore the circuit to its desired operation.