Korics is a company that dreams come true, and respects your thoughts. Delta Electronics, Inc. Today announced its consolidated sales revenues for September 2018 totaled NT$21,613 million, representing a 4 percent increase as compared to NT$20,749 million for September 2017 and a 1 percent increase as compared to NT$21,457 million for August 2018.

General info

The flaming touch and the campfire probably constituted early man's first use of 'artificial' lighting. Prehistoric man, used primitive lamps to illuminate his cave. Nowadays the electrical lighting is the most commonly used form of artificial lighting. The history of electrical lighting is long. In 1809, SIR HUMPHREY DAVY first demonstrated the electric carbon arc at the Royal Institution in London. The electric arc was also used for lighting at the Paris Opera. The principal of the electric arc is still used today by many older followspots and film projectors, used in entertainment facilities around the world. In 1877 Thomas Edison became interested and experimented with electric lighting. On October 15, 1878, the Edison Electric Light Company was incorporated. Edison patented more than 1000 inventions. Besides the incandescent lamp, Edison is given credit for inventing a system of electric generation. Although Edison did not invent the electric filament lamp, he did however turn theory into practicable form and was one of the first to successfully market incandescent lighting. Edison's first successful lamp used carbonized cotton thread as a filament, installed in a glass bulb, with all air evacuated. In 1880 Edison experimented with other materials for filaments, including wood, grasses, hair and bamboo. Of the over 6000 specimens tested by his laboratory, bamboo, became commonly used for filaments. In 1880, on January 17, Patent number 223,898 was issued to Edison for the T.A. Edison Electric Lamp. After the introduction of the tungsten filament, the next highly significant step in the development of the incandescent lamp, came in 1913 when the first gas-filled lamp was produced. Coiled filament gas-filled lamps in 500, 750 and 1000 watt sizes were introduced in 1913. They gave a much better light at higher efficiency with the same life as former lamps. Nitrogen gas was used in the first lamps but argon was substituted in 1914. Nowadays artificial illumination consumes more than 25% of electricity generated over the world. There are several trends in energy saving technologies for lighting industry. The first is implementation new lamps such as fluorescent, mercury, sodium, metal halide, halogen lamps. The second is associated with electronic circuit design for such lamps.

General lighting technology articles

Don Klipstein's lighting articles - bulbs, fluorescent, gas discharge lamps, LEDs, xenon flash Rate this link
inter.Light - internet source for lighting specifiers, lighting manufacturers by product categories Rate this link
Lighting Fundamentals - lighting upgrade manual from US EPA Office of Air and Radiation Rate this link
The Lighting Library - index of lighting related reference documents that you can read online Rate this link
Tietoa valaistuksesta - information on lighting in Finnish Rate this link
Ultraviolet Radiation - ultraviolet radiation, invisible electromagnetic radiation between visible violet light and X rays; it ranges in wavelength from about 400 to 4 nanometers. It is a component (less than 5%) of the sun's radiation and is also produced artificially in arc lamps, e.g., in the mercury arc lamp. The ultraviolet radiation in sunlight is divided into three bands: UVA (320-400 nanometers), UVB (280-320 nanometers) and UVC (below 280 nanometers). Rate this link
Valaistustekniikka - lighting technology information in Finnish Rate this link
World Lighting Links - categorized index of useful lighting sites on the Internet Rate this link
www.on-light.de - site about light, lamps and lighting architecture, text in German Rate this link

Outside lighting information

Light Pollution Information - Light can pollute the outdoor environment and wash away the view of stars in the sky. This curable problem and can be prevented through the application of well designed and applied outdoor lighting. Rate this link
The Dark Side of Light - Although light pollution?s impact on stargazing is as clear as day, its effects on other environmental elements are just coming into focus. The evidence shows that artificial lighting has dire consequences for animal behavior, particularly on the ability to navigate at night. Rate this link

Home and workplace lighting info

The majority of all indoor and outdoor lighting in the home today is provided by incandescent lamps, commonly referred to as conventional 'light bulbs'. The light bulb is the most widely used lamp in residential and many commercial and industrial lighting applications for general lighting. Halogen lamps are a type of incandescent lamp that gives 'whiter' light, lasts longer, is usually small, is slightly more efficient than normal bulb and costs more.Halogen lamps are best suited for lighting areas where a direct focus of light is required.

Linear Fluorescent Tubes are the most common source of lighting in commercial facilities and can be found in many homes.Compact Fluorescent Lamps (CFL's) are of the same technology as linear tubes, but much smaller. CFLs operate with a ballast and a screw base adapter to accommodate their use in many indoor and outdoor applications. Typically, a 25 watt fluorescent lamp is supposed to give offas much light as a 100 watt incandescent bulb. Those power rating are about right, if you wait about 1 minute for the fluorescent to comeup to full brightness. When installing compact fluorescent bulbs, be sure that they do not heat too much inside the la,p. It is possible for those to fail due to excessive temperature. They don't need to reach the temperatures produced by incandescent lamps to fail after a month or two. Compact fluorescents are great, get a 'name brand' for longer bulb life. Compact florescents should not be used on any circuit which is controlled by scrs or triacs (dimmers, motion detectors, security lights) unless they aredesigned for this purpose.

Low-voltage halogen lamps are becoming more popular for lighting stores, buildings, hotels, and houses. The lamps come in different configurations and wattages (typically up to 50W). Typical voltages are 6, 12, and 24V, supplied by a safety isolating transformers that are usually connected on their primary side directly to the mains power line (110 VRMS or 220 VRMS). Most typical voltage used for low voltage halogen lighting is 12V. Most of the time the safety isolating transformer feeding the lighting circuit is located in the ceiling of the room near the lights itself. In low voltage halogen lighting the most commonly used lamp types are MR 16 lamps. They are Multiple Reflector 2 inch lamps, seen as shop display lamps absolutely everywhere, available in low voltage flavour 12V (usually 20W or 50W bulbs), needs little transformer beside lamp, and mains voltage 240V flavor usually 50W or 75W and choice of beam angles. The low voltage lamps are typically very bright.

Lighting for use at a low voltage is to be considered as a power current installation since low voltages, such as 12 V, result in high currents even at moderate outputs which can generate a lot of heat. Installation must therefore be carried out carefully. The cables to the lamps must be fused in order to limit the heat generated, and they must not be twisted around one another as temperatures which are too high may then result. The core area is rough so that voltage drops which are too great do not occur, as this means that the anticipated light yield is then not achieved. Position the transformer close to the load so that the core area can be kept to a reasonable level. The following table provides guidance on the choice of cables for various loads at 12 V:

Length

1 mm²

1.5 mm²

2.5 mm²

4 mm²

6 mm²

10 mm²

Concept Igbt Drivers For Mac