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A dimmer rack containing 192 dimmers, with one dimmer per circuit. The dark-grey box at the upper left is a demultiplexer. Dimmer in a residential application with RF-based remote control. Non domestic dimmers are usually controlled remotely by means of various protocols.
Many memory consoles have a bank of faders. These faders can be programmed to control a single channel (a channel is a lighting designer's numerical name for a dimmer or group of dimmers) or a group of channels (known as a ""submaster""). The console may also have provision to operate in analog to a manual desk for programming scenes or live ...
open Home Automation Bus (openHAB) is an open source home automation software written in Java.It is deployed on premises and connects to devices and services from different vendors.
These devices may include relays, occupancy sensors, photocells, light control switches or touchscreens, and signals from other building systems (such as fire alarm or HVAC). Adjustment of the system occurs both at device locations and at central computer locations via software programs or other interface devices.
Joel Solon Spira (March 1, 1927 – April 8, 2015) was an American inventor, entrepreneur, and business magnate.. He invented a version of the light-dimmer switch for use in homes around the United States and led his Lutron Electronics Company into the production of lighting controllers.
Avolites started as a lighting production company in 1976 when a group of touring road crew formed a company to manufacture their designs for a touring dimmer rack, the Avolites FD dimmer. [ 6 ] [ 7 ] The company then expanded into manufacturing lighting control consoles , initially releasing the 8100 series, before creating the QM500 series in ...
Adjusting the brightness of light emitted by a light source is then merely a matter of setting at what voltage (or phase) in the AC half-cycle the dimmer begins to provide electric current to the light source (e.g. by using an electronic switch such as a triac). In this case the PWM duty cycle is the ratio of the conduction time to the duration ...
The longer the switch is on compared to the off periods, the higher the total power supplied to the load. The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible.