The lamps you're not allowed to have. Exploring the Dubai lamps

Step-by-Step Tutorial: Understanding the Dubai Lamps Technology

1. Introduction to Dubai Lamps:

   • The Dubai lamps are a special type of Philips lamp that are not available elsewhere.
   • These lamps are a joint venture between Philips and Sheikh Mohammed bin Rashid Al Maktoum, the ruler of Dubai.

2. Technology Overview:

   • The Dubai lamps use LED filament technology, with each filament rated at 1.5 watts for high efficiency.
   • The lamps achieve high efficiency by under-running the LEDs, resulting in 100-200 lumens per watt.

3. Variants of Dubai Lamps:

   • The Dubai lamps come in one, two, and three-watt variants, as well as an MR16 style lamp operating at 12 volts.
   • They are available in warm white and cool daylight colors, with the latter being popular in hot climates like Dubai.

4. Color Rendering Index and Cost:

   • The lamps have a color rendering index of 80, offering good color representation.
   • The cost of Dubai lamps ranges from £3.60 to £6.60, making them a premium option.

5. Technology Behind Dubai Lamps:

   • The lamps utilize a unique circuitry design with capacitive droppers and current regulators for efficient operation.
   • The circuitry ensures stable current flow to the LEDs, enhancing longevity and performance.

6. Exploring the Circuitry:

   • The circuitry includes capacitors, resistors, a MOSFET, Zener diodes, and a linear current regulator for LED operation.
   • The lamp's design prevents voltage fluctuations and ensures consistent LED performance.

7. Testing and Analysis:

   • Reverse engineering the lamp's circuitry reveals the components responsible for regulating current and voltage.
   • Testing the lamp's voltage output and current flow confirms its efficient operation and design.

8. Longevity and Efficiency:

   • Operating LEDs at lower currents increases efficiency and extends the lifespan of the lamps.
   • Under-running LEDs reduces stress on components and ensures prolonged performance.

9. Final Thoughts:

   • The Dubai lamps represent a pinnacle in LED filament lamp technology, offering high efficiency and longevity.
   • While not dimmable, these lamps provide a premium lighting solution with advanced circuitry for stable operation.

By following this step-by-step tutorial, you can gain a deeper understanding of the technology and design behind the exclusive Dubai lamps from Philips.