Another component in Carmanah's MicroSource suite of integration technologies is Independent Light Output.
As batteries discharge over the course of the night, many battery powered lighting products become dimmer and dimmer. To avoid this characteristic, Carmanah has developed low voltage LED driver electronics that are custom designed for each product and ensure that the LEDs receive a constant drive level - independent of the state of the battery system.
These drivers are sophisticated and feature a number of innovative enhancements:
- The circuitry is super efficient, ensuring a maximum operating efficiency of between 85% and 95%, depending on the product.
- LED electrical characteristics are different according to their make, model and color. Carmanah's LED driver electronics are custom matched to accommodate the specific LEDs used.
- Precise brightness control and power consumption adjustment is achieved by pulse width modulation. In simple terms, this means to achieve an equivalent of 50% brightness, the LEDs are pulsed so that they are operating only 50% of the time. The rate of modulation is fast enough that it is not detected by the human eye. Pulse with modulation enables the brightness to be adjusted while maintaining the LEDs at their highest power efficiency. Unlike conventional filament bulbs, pulsing also has no detrimental affect on LED lifespan.
As an additional means of maintaining consistent performance and efficiency, the LEDs themselves are heatsinked to ensure optimal operating temperature.