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Besides energy saving, controllability is the next highly expected feature of LED Lighting over Traditional Lighting. However, such a control aspect seems to be missing in daily applications. Since 2015, we've been developing & marketing Phase Dimmers* and related products to address LED dimming control

Driven by our project field experience, we developed a new type of Tunable White control using Phase Dimming & 0-10V technologies, which gives our Tunable White Controller (DZ1G300TUNE) & Dynamic Lighting Controllers (DZ2G300TUNE_TOGG / _PUSH). It's our goal to lower the technical and costs barriers for different Circadian Lighting or Commercial applications that desire Multi-Purpose Lighting.

* Our 450W / 220-240Vac Single Live-wire Operational Trailing-edge LED Phase Dimmers released to market includes DZ2G450DIAL & DZ1G450CAPS (2015), DZ3G450DIAL (2017), DZ4G450MULT (2018). In 2017, our DZ3G450DIAL was listed as a SORAA® Compatible dimmer. In Q2 2021, an Enhanced version of DZ3G450DIAL has been available.

In this Application Video Library, we shared a number of interesting topics on LED dimming or how our products can be applied in different scenarios.

Direct AC Deep Dimming with 10/15m LED Strip Light (PHILIPS 31058)

LED Strip Light is widely used in lighting design as indirect lighting. Its easy installation attribute has a clear advantage to traditional lighting (e.g. T5 Fluorescent Lamps) in cabinet shelf backlight design. The most common LED Strip is DC 12/24V and it usually requires a low voltage DC 0/1-10V dimmer for dimming. Such a 0/1-10V dimmer draws power from a LED Driver or a Switching Mode Power Supply (SMPS). (For extra low voltage dimming, the DZ1G1TEN is a 1-10V Controller with the Minimum-Trim option from Legend Tech DIMEZE™. For more details on this application, please refer to our Technology page / DC 1-10V Dimming for Large Area LED Strip Light Application.)

In this video, we use our Legend Tech DIMEZE™ phase dimmer and a phase dimmable LED driver to demonstrate Deep Dimming performance of a normal 12V 15m long LED Strip  (PHILIPS 31058). The beauty of AC Phase Dimming is that it combines the dimming control and power supply together, which simplifies the wiring for set-up. The same setup can be applied to other constant voltage LED strips, 12V / 24V alike.

To support the demo, our team has built an Output Current-Selectable Constant Current Phase Dimmable Driver for three rolls of PHILIPS 30158 (DC 12V and 18W per 5m), so that we adjust the output current to match the LED strip length and use the same driver to deep-dim the 10m and 15m LED strip. The linear deep-dimming performance and light up at last dimmed level feature bring all desired benefit in bedroom lighting applications.

  • For a comparison of TRIAC dimmer (flickering and inconsistency even with the same model number) and Digital LED dimmer, please visit our video
  • For a comparison of a Constant Voltage and a Constant Current LED driver using the same PHILIPS 30158 12V LED strip light, see another video.