Light Dimmer Modulator
Light Dimmer Modulator
Dimmer generally refers to a light shader, a light shader is also called a dimmer, an instrument used to adjust the illuminance of light.
Electrical device for changing the luminous flux of the light source in the lighting device and adjusting the illuminance level
An electrical device that changes the luminous flux of the light source in the lighting device and adjusts the illuminance level. The large-capacity device that constitutes a system is called a dimming device. Its basic principle is to change the effective value of the current of the input light source to achieve the purpose of dimming.
The purpose of a dimmer is to adjust the brightness of the light to different levels. Different intensities of light output produced by lights of average power are induced by decreasing or increasing the RMS voltage. While variable voltage devices can be used for various purposes, this modulation is intended to control lighting.
The range of dimmers is: small units of normal size light switches for home lighting, high power units for use in large theater or architectural lighting installations. Small unit dimmers are usually directly controlled, while higher power units use a remote control system.
Modern professional dimmers generally use digital control systems like DMX or Ethernet.
Modern dimmers are built from thyristors (1373) rather than potentiometers or variable resistors because they have higher efficiency.
The variable resistor will dissipate heat (0.5 less efficient). By switching on and off, the silicon-controlled rectifier is theoretically dimmed (efficiency is close to 1.0)
Dimmers can be classified by control method and application.
According to the control method, it can be divided into resistance dimmer, voltage regulation dimmer, magnetic amplifier reactance dimmer and electronic dimmer;
According to the occasion of use, it is divided into civil dimmer, film and television stage dimmer, airport lighting dimmer and daylight integrated control system.
A resistor is connected in series between the incandescent light source and the power supply, and the current in the light source can be adjusted by changing the resistance value to achieve the purpose of dimming.
Its disadvantages are high energy consumption, low efficiency, large size, and inconvenient control. The advantages are that both AC and DC power supplies can be used, and there is no radio interference. It can be used in the lighting of laboratories, audio-visual demonstrations and ship navigation equipment.
Voltage regulator dimmer
An autotransformer. The secondary voltage is changed by adjusting the contact position of the brush with the coil wound outside the transformer yoke.
It has the advantages of less energy consumption, high efficiency, and increasing the load within the rated power does not affect the original dimming degree. The disadvantage is that it is only suitable for AC power, heavy, non-ferrous and ferrous metals that consume more, and cannot be controlled remotely.
Magnetic Amplified Reactance Dimmer
By changing the magnitude of the current in the DC winding wound on the iron yoke, the inductive reactance of the AC winding is changed.
It has good dimming performance and easy control, but is bulky and bulky and has been replaced by electronic dimmers.
In the early days, thyristors were used as switching elements, and later thyristors were used. This dimmer has the advantages of light weight, small size, high efficiency, and easy remote manipulation, and is widely used.
Its disadvantage is that if no effective filtering measures are taken, radio interference will occur, and dimming is troublesome for gas discharge light sources such as fluorescent lamps and high-intensity gas discharge lamps. Dimmers using high-power transistors or FETs can overcome this shortcoming.
For home, office, meeting room, school, corridor and other occasions. The line is simple, the price is low, and the performance requirements are not high.
Common dimmers such as table lamps and chandeliers can meet people's needs for light in different work, and achieve the purpose of comfort, hygiene and energy saving.
Film and television stage dimmer
There are two types of single-circuit and multi-circuit, and each circuit has a larger capacity. It is also called dimming device with multiple circuits, large capacity, and constitutes a system. It is characterized by multiple circuits, complete functions, and consistent dimming performance of each circuit.
There are two control methods: manual control and microcomputer control. Manual control methods include automatic control, centralized control, cross control, sub-master control, master control, and pre-selection of scenes, etc.; in addition to all the above-mentioned functions, the computer-controlled ones can also control the stage lighting according to the different scenes and the order of time. The light and dark information is stored in the microcomputer, and the program is automatically executed according to the sequence.
According to the special requirements of the film and television stage for lighting, new varieties such as sound-controlled and program-controlled dimmers have appeared.
Premier Cable CO LTD, www.premier-cable.net is a cable factory with 400 workers to make cables and wire harness
We make a lot of RJ11, RJ12 , RJ45 Cables , RJ12 T-Splitter and IP67 Waterproof Cables
RJ12 T-shaped Splitter
RJ12 to M16 waterproof Cable
RJ12 to 3.5 Jack Extension Cable
Push-Lock Dimmer to RJ12 cable
RJ12 Daisy Chain Geeklight Cable
Tel : 0086-0139-2949-7934 , Skype : james198585 , Email : James@premier-cable.net , Email : firstname.lastname@example.org
What Cable Does Cisco Switch Console Use?
Which cable is required to establish a console connection from the computer to the Cisco router?You can find more Cisco Console Cables for video conferencing cameras, switches, routers, servers, firewalls, and other devices in Premier Cable.
What Does RET Cable Stand For?
Are you looking for an AISG RET Cable suppliers? Our Premier Cable is a cable harnesses manufacturer for Communication, Telecom, Base Stations, 5G Towers, IoT, Gateway. Leave us messages now to customized your needs.
What is the IX Industrial Ethernet Cable?
IX Industrial Ethernet Cable, the new transformation of Cat6a network cables. Our Premier Cable manufacture and export high-quality products of cable assemblies for medical devices, machine vision cameras, factory automation, robotics, PoE (Power over Ethernet), and industrial switches.
Is Servo Motor and Servo the Same Thing?
With the development of industrial automation and IoT, Servo Motor plays an important part. Our Premier Cable provides the Servo Motor Encoder Control Cable for robotics, smart networked vehicles, medical, textile, 3C, industrial automation, smart factories, IoT, AGV, and so on.
Are you looking for the NMEA 2000 Supplier? Our Premier Cable designs and manufactures cable assembly connectors that support open standard cables, cable assemblies, connectors, terminals, and power supplies for NMEA 2000 systems.
USB FTDI Cable IP67 waterproof round connector manufacturers introduce the development direction of the waterproof connector
USB FTDI Cable IP67 waterproof round connector Manufacturers tell you that the waterproof connector is a connector with the ability to work underwater, which can provide normal, safe, and reliable power supply and signal transmission to the electronic components, and can also play a very good role in the waterproof and dustproof effect.