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What is LED stepless dimming?
One advantage of LED PWM dimming is that the light color of the light source does not change with the current. This control method adds a DC/DC converter to the original constant voltage source (or adds a PWM chopper switch to the original constant current source), increases the cost of the circuit, and increases the cost of the main circuit. loss.
넶159 2016-12-11 -
RGB LED color adjustment
RGB is a kind of feeling when LEDs are lit by three primary color LEDs, it can emit yellow, purple, and cyan (such as red and blue LEDs emit purple light when they are lit); if the red, green, and blue LEDs are lit at the same time When, it will produce white light.
넶6 2016-08-15 -
2.4G wireless remote control transmission technology
In the field of 2.4G, everyone is more familiar with Bluetooth and wifi. Zigbee is more commonly used in the Internet of Things. In the professional field, low-cost chips such as nrf2401 and cc2500 are more commonly used. In terms of distance, 100mw at the same power and 17Dbm gain. Bluetooth is only 10 meters, wifi is about 20 meters. Zigbee does not exceed 50 meters. nrf2401, CC2500 will not exceed 100 meters.
넶35 2016-08-08 -
0/1-10V dimming in lighting project
0-10v dimming is divided into: 0-10v and 1-10v, they are all input 0/1-10v analog signal (according to 0-10v voltage amplitude) to control the average current flowing through the LED, generally through control Dimming is realized by PWM waveform.
넶6 2016-06-03 -
AC Triac Dimming
AC Triac dimming has been applied to incandescent lamps and energy-saving lamp dimming methods earlier, and is currently the most widely used dimming method for LED dimming.AC Triac dimming is a kind of physical dimming. Starting from AC phase 0, the input voltage is chopped, and there is no voltage input until the AC Triac is turned on.Its working principle is to produce a tangential output voltage waveform after cutting the input voltage waveform through the conduction angle.
넶21 2016-05-25 -
Pixel LED Lighting Control
Pixel LED strip which is also called full-color light strips and magic light strips, is different from ordinary RGB color-changing light strips, which have one more integrated IC chip than ordinary color-changing light strips.
넶3 2016-05-10 -
Comparison of 433M and 2.4G frequency used by RF LED controllers
If the network topology and functions are simple, with one master and multiple slaves, but the network environment is complex and the cost is limited, it is recommended to give priority to filtering 433MHz products; if the network topology is more complex, with various functions, strong network robustness, low power consumption requirements, development Simple, 2.4GHz is also a good choice.
넶27 2016-04-10 -
Why is the DALI protocol called an advanced dimming solution?
DALI (Digital Addressable Lighting Interface) is an international public standard lighting control communication protocol with a communication speed of 1200 BPS ± 10%. Mainly used for dimming control of multiple fluorescent lamps and LED lighting. DALI can form a network with a maximum of 64 short addresses and 16 group addresses. A master can control one or more slaves to communicate in half-duplex mode.
넶7 2015-08-19 -
Why is DMX protocol control so stable?
DMX512 is designed around the industry standard EIA-485 interface. EIA-485 belongs to the "electric" end of interface, voltage, current, etc.The system is established based on downward symmetrical transmission along the shielded conductor twisted pair. This winding structure ensures that the generated interference will act on both signals equally, thus ensuring consistent digital phasing.
넶56 2015-08-17 -
What is PWM dimming？
LED is a diode, which can realize fast switching. Its switching speed can be as high as meager profit. It is unmatched by any light-emitting device. Therefore, as long as the power supply is changed to a pulse constant current source, the brightness can be changed by changing the pulse width. This method is called pulse width modulation (PWM) dimming method.
넶38 2015-08-15
