PWM Dimmable LED Tri-proof Lighting PC Housing 600mm 20w 2050Lm 3000K

Dimming LEDs with pulse-width modulation

LEDs can be dimmed in two ways: analog and pulse-width modulation (PWM) dimming. Analog dimming changes LED light output by simply adjusting the DC current in the string, while PWM dimming achieves the same effect by varying the duty cycle of a constant current in the string to effectively change the average current in the string. Despite its attractive simplicity, analog dimming is inappropriate for many applications.

Analog dimming is inappropriate for many applications because it loses dimming accuracy by about 25 percent+ at only 10:1 brightness levels, and it skews the color of the LEDs. In contrast, PWM dimming can produce 3000:1 and higher dimming ratios (at 100Hz) without any significant loss of accuracy, and no change in LED color.

A typical PWM wiring diagram is shown below:

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 130 LPW
• Input Voltage: 85-265VAC
• Powerfactor(PF):>95%
• Epistar Chip