![]() Spira, who would found the Lutron Electronics Company in 1961, invented a dimmer based on a then-new solid state switching device called a Silicon Controlled Rectifier or SCR. In 1896, Granville Woods patented his "Safety Dimmer", which greatly reduced wasted energy by reducing the amount of energy generated to match desired demand rather than burning off unwanted energy. This required all power to come through the lighting control location, which could be inconvenient, inefficient and potentially dangerous for large or high-powered systems, such as those used for stage lighting. History Įarly dimmers were directly controlled through the manual manipulation of large dimmer panels. The device is small enough to fit into a regular wall box provided for a switch. Their cost is about the same as the older "dimmability" circuitry that they replace in LED bulbs, fixtures or drivers.Ī residential-type dimmer switch with sliding knob to change brightness. They enable computer control via networked switches, but do not require it. A simple communications protocol, such as Blink'n'Dim, delivers dimming commands via the power line. Most recently, software programmable internal dimmers can use signals from the same switch that turns lights on and off to control dimming. Since semiconductor or solid-state dimmers switch quickly between a low resistance "on" state and a high resistance "off" state, they dissipate very little power compared with the controlled load. A variable resistor would dissipate power as heat and acts as a voltage divider. Modern dimmers are built from semiconductors instead of variable resistors, because they have higher efficiency. Dimmers with direct manual control had a limit on the speed they could be varied at but this problem has been largely eliminated with modern digital units (although very fast changes in brightness may still be avoided for other reasons like lamp life). In the professional lighting industry, changes in intensity are called "fades" and can be "fade up" or "fade down". In newer systems, these protocols are often used in conjunction with Ethernet. ![]() Modern professional dimmers are generally controlled by a digital control system like DMX or DALI. Small domestic dimmers are generally directly controlled, although remote control systems (such as X10) are available. More specialized equipment is needed to dim fluorescent, mercury-vapor, solid-state, and other arc lighting.ĭimmers range in size from small units the size of domestic light switches to high-power units used in large theatrical or architectural lighting installations. ![]() Although variable-voltage devices are used for various purposes, the term dimmer is generally reserved for those intended to control light output from resistive incandescent, halogen, and (more recently) compact fluorescent lamps (CFLs) and light-emitting diodes ( LEDs). ![]() By changing the voltage waveform applied to the lamp, it is possible to lower the intensity of the light output. JSTOR ( December 2019) ( Learn how and when to remove this template message)Ī common dual dimmer module used in stage lighting A dimmerĪ dimmer is a device connected to a light fixture and used to lower the brightness of the light.Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. We are glad to provide help.This article needs additional citations for verification. Please contact us FIRST in anytime if you have any problem. addlon's 3 Year Product Support: We proudly stand behind all of our products 100% and we offer 3 year quality support.The whole lamp decors your living room, bedroom, office or any home corner, its simple and quadrate design suit for all furnishing style. This lamp is easy to install, normally can be finished by one person. 15mins Easy Installation: We provide detailed manual and intallation video.Also, the lamps self is heavy enough to avoid fall down. You can put photo frame, plants, books, or any items on it. Triple Storage Space: addlon Shelf floor lamp with 4 tiers, each board use high-density fiber material, which loads 50 pounds max.You can charge the phone or laptop by this lamp when using on sofa or bed. 2 USB and 1 Outlet: The lamp has 2 fast usb charge and 1 outlet, and it can charge 3 eletronic equipments in the meantime.Its control range is 49ft max, which covers the most range of your room. Remote Control: This remote uses for adjust the brightness and color temperature, you can change it to the most comfortable lighting.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |