High Brightness LEDs
 A LED is a compound semiconductor device that converts electricity to light by the passage of electric charges through a duly treated silicium junction - LED is therefore a diode that at a certain tension of about 3,5V starts emitting light - The emitted light is really pure (monochromatic) and the colour depends on the type of impurities which are purposely put in the silicium - The white light emitted by the High Brightness LEDs of our product range is the result of an initial blue light transformed by a phosphor layer, thus emitting the white light.
Drivers for High Brightness LEDs
High Brightness LEDs work in constant current and therefore the tension on the LED may change by the light colour, by the temperature and by the construction tollerances of the LED itself - The driver must therefore control the current in the circuit with the greatest precision - A too high current destroys the LEDs in few seconds while a too low current decreases drastically its light efficiency - All the LED drivers in this site respect the max. current values implied by the LED manufacturer, thus granting a long life duration of the LED applications - In order to grant a constant current, all LEDs must be connected in series - An eventual parallel connection commonly used for halogen lamps destroys the LEDs in a short time - The installation instructions explain how to connect the High Brightness LEDs correctly - Should the installation be carried out be a unqualified person, we advise to use our pre-assemblied series cabling specially made for kits.
Life duration of High Brightness LEDs
The life duration of High Brightness LEDs depends on two key factors: the working temperature and current -The modest heat emitted by the LEDs is dissipated by a special aluminium board on which the diodes are soldered - A situation of overworking or a lack of air circulation will not permit a natural dissipation of heat possibly leading to a dangerous rise of the temperature - High Brightness LEDs have a relatively low temperature limit of 85..100° measured on the diode: High Brightness LEDs must therefore be installed in aerated rooms, far from heat sources.
White light colour of High Brightness LEDs
The light colour of LEDs is classified in: “Warm White” from 3.000 to 4.000°K and “Cool White” from 5.000 to 8000°K These two classifications are on their turn subdivided every 1.000°K each. That's why, among LEDs there could be really slight tollerances in colour. In order to limit these possible slight colour differences, we advise when making a new order to point carefully out the well selected colour code of the previously purchased LEDs; in fact, the more distant these colour selections are, the more visible these colour differences will be.
Dimmerability
Drivers for High Brightness LEDs must work in constant current in order to have the stabilized output necessary for the long life duration of LEDs - High Brightness LEDs have a fixed and therefore undimmable junction tension, unless our special drivers PLD and DBOX controlled in PWM (Pulse With Modulation) are used.