General Electric Light Bulbs

Neon lights are gas discharging lights used as light sources for indoor and outdoor illumination applications. They were first produced by Georges Claude, an eminent French chemist, in 1910. They became commercially available in the early 1920s.

A neon light consists of a cathode and anode, fixed one at each end of the tube. When electric current is passed through this glass tube containing neon gas, the potential between the anode and cathode causes the electrons in the gas to ionize and glow in a bright color.

Neon lights work on relatively high voltage. Unlike incandescent lights, they have no filaments and have a typical lifespan of 10,000 to 25,000 hours. These lights operate under a wide temperature range from -40°C to +150°C. They are least affected by mechanical shock or vibration.

Neon lights come in a wide range of brilliant eye-catching colors. These colors are produced by mixing neon gas with other gases, by coating fluorescent powders and by using colored glass tubes. Typical color produced by a neon light is bright reddish-orange. By using other ways to create new colors, neon lights can emit colors such as green, yellow and blue. For example, when argon gas is mixed with neon gas in a glass tube it will emit a blue-color light.

Small neon lamps are used as indicators in electronic equipments whereas larger lamps are used in signboards. Due to its long lifespan and low current consumption, they are good as nightlights. Nowadays, application of neon lights is devised in digital logic circuits, binary memories and frequency dividers.

Neon lights are used mainly by business firms for advertising purposes. They use neon lights in their banners and signboards for catching attention of the general public. They have a significant role in generating sales. Banners and signboards written in bright and brilliant colors of neon lights are really a dazzling way to attract business.

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Adding an animation to my prototype for a christmas light based clock display. Yes, the animation freezing at “6″ was a bug; an accidental truncation meant that the animation would freeze for over a month after about 60 seconds had elapsed. Oops! Also, the lights are literally just taped to the table, but that was difficult to do even with two people (one person holding, the other taping). The outdoor wires put up quite a fight! As for the clock possibly not being built: While the display looks great in the video, it’s unfortunately somewhat difficult to read in person, especially once the room lights are turned on. Also, the lights would have to doubled up (as seen in the prototype) in order to create a decent viewing angle (the icicles spray light out between about 30 and 120 degrees from “down”). This means the clock would require at least 46 icicles (4 + 14 + 14 + 14), but only 36 come in each package. Ultimately, the idea of building a colorful sea urchin becomes increasingly tempting. EDIT: Egads! My manners! These lights are a flavor of GE Color Effects christmas lights, which are easy to control using a micro-controller (in this case an Arduino Uno) and Robert Quattlebaum’s guide to the protocol: www.deepdarc.com Many thanks to Rob for figuring out how to talk to the bulbs!

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Mercury-Quartz Lamp (Arc Tube Mercury Lamp)A high pressure mercury-quartz lamp is a gas discharge lamp. It uses mercury in an excited state to produce light. Just as other lamps of this type it is a sealed tube with electrodes at its ends. The tube is made of quartz and filled with argon and mercury under high pressure. In Russian electronic science it is sometimes called the arc tube mercury lamp. To turn these lamps on starting-regulating devices are used with power range from 100 W to 12 kW.A distinctive feature of this lamp is a large portion of radiation generated in the ultraviolet range including a sub-range called hard ultraviolet.This determines spheres of its application. These lamps are not used for illumination as their emitted light spectrum is not suitable for these purposes. But what is more important, UV radiation is extremely dangerous for humans. It is especially harmful for eyes. If people stay in areas where mercury-quartz lamps are used then the lamps have to be hidden behind ultraviolet absorbing light filters or people must simply wear protective glasses.On the other hand this is exactly why such lamps are widely used. For instance, they are used in medicine as bacteria germicidal irradiators. They are also used for ultraviolet baths, skin disease treatment, and quartz treatment.While working in a room a high pressure mercury-quartz lamp produces ozone. High concentrations of ozone are extremely dangerous for humans. At the same time ozone also …

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www.lamphouse.co.uk giving advice on how to replace a projector lamp for UK Spec projectors and also general cleaning. more videos to follow.

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