Triac Dimmable LED Tri-proof Lighting PC Housing 600mm 30w 3330Lm 6000K

Triac Dimming

It is an expectation that when you buy a LED light fitting you will be able to control the brightness via the same dimmer you use with your halogen or other incandescent lights. LEDs use a different method to perform dimming known as Pulse Width Modulation.

On the other hand, halogens/incandescent lights use a TRIAC dimmer (the normal dimmer you have on your wall today) which is incompatible with the LED’s PWM. To avoid having to replace all your dimmers or worse still, add additional wiring, there needs to be a way to convert TRIAC dimming to PWM.

First it may be useful to provide an overview of how a TRIAC (Triode for Alternating Current) dimmer works. The TRIAC dimmer controls the amount of power supplied to the light, the lower the power, the dimmer the filament will burn. The TRIAC is very clever in that it can manipulate the AC current (which is a sine wave) by rapidly turning the power on and off at different parts of the wave. In Australia the AC current runs at 50 cycles per second (50Hz) and the TRIAC can flip flop between ON and OFF 100 times a second (2 x 50Hz). Varying the duration of the ON/OFF cycle controls the amount of power that gets to the light which in turns affects the filament brightness. For example, the longer the TRIAC is in the ON state per cycle the brighter the light.

A typical Triac dimming wiring diagram is shown below (a):

A typical Triac dimming wiring diagram is shown below (b):

A typical Triac dimming wiring diagram is shown below (c):

Product benefits

• Functional design
• High light output thanks to high-power LED
• Quick and simple installation
• With exceptional rated lifetimes
• Zero restrike time
• A compact lightweight construction
• Provides additional benefits of energy savings
• Significantly reduced relamp maintenance costs.

Areas of application

• Suitable for indoor and outdoor applications
• Commercial lighting: Supermarket/Shops/Exhibition hall/Parking place/gas station;
• Public lighting: library/School/Tunnel/Metro/Bus/Train/Bus station, railway/station, airport;
• Industrial lighting: Factory/Warehouse and Etc.

Product features

• Waterproof, dust-proof, corrosion proof
• Type of protection: IP65
• Efficacy up to 110 LPW
• Input Voltage: 85-265VAC
• Powerfactor(PF):>95%
• Epistar Chip