Diagrams of Typical LED Spotlights: MR16

Continuing with our last post” Diagrams of Typical LED Spotlights: GU10” regarding GU10 LED  spotlights, in this post, we will talk about MR16 LED spotlights.

MR16 spotlights have been commonly used in spotlighting applications. Traditional MR16 spotlights are halogen lamps. Typically, under current light efficiency of LEDs, 3W LEDs is equivalent to 20W halogen lamps, and 5W or 6W LEDs is equivalent to 40W halogen lamps in terms of lux. Here the picture shows a 4*1W MR16 LED spotlights. See Fg. MR16 LED Spotlights.

LED Spotlights MR16

From the appearance point of view,  MR16 LED spotlights and halogen spotlights look very similar. However, in fact, the difference between them is tremendous.

Light Source: light source is the essential difference between LED spotlights and halogen lamps, and that’s the reason why LED lights are much more efficient than halogen lamps. halogen lamps generate light by heating tungsten that covered by halogen gas, while for LEDs, simply describing, when current goes through LEDs, compounded particles in P-N junctions will then release photons (energy). LEDs generate less heat when emitting light, that’s the reason why LEDs are much more efficient than halogen lamps and incandescent bulbs.

LED Spotlights MR16 - Dimension

Materials: materials are different, LED spotlights usually need aluminum heatsink for  heat dissipation while halogen spotlights do not – their lamp bodies are usually made of plastic.

Driver: furthermore, LED spotlights need drivers (or transformers) in order to be running in existing MR16 fittings, normally 110V or 240V high-voltage fittings.
The picture below illustrates a typical MR16 LED spotlight exploded view. The spotlight is decomposed into 7 components as can be seen from the diagram. The following are the corresponding annotations.

LED Spotlights MR16 - Components

1. Lens: beam angle usually customizable
2. Screws
3. LEDs
4. MC PCB
5. Heatsink
6. Replacable plug: GU5.3,E26,E27,B22

More interesting stories about LED light bulbs,  will be posted soon, etc Par30.
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Image Source: ledcax.com

City of Novato Testing LED Street Lights

It's reported that city of Novato is in the process of conducting a LED street light test to gain public feedback on its selection of energy-efficient lighting fixtures.
Four LED lighting fixtures have been installed between Rowland Boulevard and Adele Drive, and four induction fixtures were installed between Arthur Drive and Yukon Way.

All lights installed are expected to reduce monthly electricity costs by about 40% and also reduce routine maintenance costs three to four times that of the current fixtures.