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.
Minimum Power for LED Dimmer is a Key for Deep Dimming Performance!
Generally speaking, there are Two Basic Parameters to look for in determining if a dimmer is suitable for LED Dimming and if it is capable of Deep Dimming performance: (a) Trailing-edge Phase-Cut Methodology, which is covered in another video & (b) Minimum Power Requirement for a LED Dimmer. This video focuses on demonstrating the very different effects achieved by using two LED Dimmers side-by-side with the same set of Lamps. This difference shows the significance of Minimum Power Requirements for Achieving Deep Dimming for LED Lighting.
As LED Efficacy continues to rise and manufacturers adapting to the latest LED chipset technology, End-Users would often find the brightness level is still too high and feel uncomfortable even they've dimmed the lights to the lowest available level. As a result, they need to disconnect some of the Lights in the room, which spoils the overall Lighting Design.
Deep Dimming is about dimming range in 0 – 20% of the measured light level from the fixtures, which corresponds to the approximately 0 - 45% of the perceived light level to the human eyes. But doing so on LED Lights is not as straight-forward as one experienced with Incandescent Lights.
Given the high energy saving performance (high lumen output per watt) of LED vs. Incandescent Lamps, in order to achieve such kind of dimming effect, the Minimum Load Requirement of a LED Dimmer is a good indicator of whether the dimmer is designed for LED Deep Dimming. Unlike an Incandescent (TRIAC) Dimmer that usually has a Minimum Power Rating of 50W+, a LED Dimmer would usually have a much smaller equivalent requirement.
In this video, we set up a few lamps (Dimmable LED Lamps and a Halogen Bulb) to compare the Dimming Range achieved by Two Dimmers: Dimmer "A" and our Gen 2 LED Dimmer, DZ2G450DIAL. On the same set of Lights, DZ2G450DIAL achieved Dim-to-Dark or Dim-to-Off, while the other did not.
While LED Dimmer design is more complicated than this, this video is a good introduction to understand the difficulty of LED Dimming. Since this video is published, we've released our Gen 3 (DZ3G450DIAL) LED Dimmer and Gen 4 (DZ4G450MULT) Multi-Way LED Dimmers to address different types of LED Dimming applications.
By working in the field with our customers together, we've also developed our Total Solution / Associated Product Recommendation to help customers with their LED Dimmer and Associated Product Selection, such as, selecting Dimmable Drivers to match-up with a COB Light on-hand (see our application notes & relevant video), which becomes relevant when choosing CCT changeable LED Fixtures for Human-Centric Lighting applications in the near future. It's our intention for the interested parties to browse both this Video section and our Technology section to understand the LED Dimming more interactively and choosing the appropriate LED Dimmers for the applications on-hand.