d_series th

Ultra high efficiency circuit design

The L1600x4 circuit dominates the output competition and allows multiple battery types.

Reliability that you can count on

We design this circuit to survive the toughest torture environment including: 1) repeatedly over-night burn-in test w/ minimal cooling, 2) over input voltage test of up to 6.5V, 3) over-driven output current test of up to 2A, and 4) high temperature duration test.

Our experienced electronic engineers ensure all components are working at its maximum efficiency and highest stability with the optimally planned and implemented circuit pcb layout. All chosen electrical components in this circuit design have good amount of headroom to ensure high stability in long term usage.

Excellent runtime and flat regulation

D25LC2 Color runs for 200+ hours on its lowest brightness level. The current regulated circuit design allows constant output throughout its runtime for all output levels without flicking.

At highest brightness level, D25LC2 Color offers flat output regulation for 1.8 hour using EAGTAC 3400mA 18650 li-ion. The red LED has different runtime due to the different forward voltage.

The current regulation control method allows the just right of amount of current going through the LED. This results in constant brightness output regardless of battery type, LED variation, and temperature change.