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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.

Inconsistency of Schneider KB31RD400 Dimming with LED Strip Light

This video is a sequel of our last video to show the differences between TRIAC Dimmers and Digital LED Dimmers. In the last video, we pointed out the 2 critical parameters in order for TRIAC dimmers to work for LED dimming, namely, the minimum-holding-current of the TRIAC IC (unknown) and the amount of current drawn from the load as we dim (variable).

As long as the current required is higher than the threshold value, TRIAC dimming seems to be working fine. The specific value of the minimum-holding-current for the particular TRIAC IC varies from batch-to-batch and is subject to the production lot, production site, and source for the TRIAC IC etc. This is the ultimate cause of inconsistent dimming performance.

As you’ll soon see, all these 3 dimmers (Schneider KB31RD400) do not work with this LED Strip light. The point here is to pay attention to the dimming level, below which each individual dimmer shows flickering, or the dimmer becomes unstable itself. The instability causes a chain-effect to the LED driver, which is powered via the dimmer. As the result of the driver becoming unstable, we then see the visible flickers.