• Leds HQ
• LED Lighting
• Sequencing LED's
• Led Lantern
• Led Rope Light
• LED Trailer Lamps
• 12 Volt LEDs
• Led Tail Lights
• LED Belt Buckle
• LED Lights
• Led Signs
• LED Headlamp
• Chasing LEDs
• LED Light Bulbs
• LED Spot Light
• LED Christmas Lights
• Led Light Bulbs
• LED Flasher
• Christmas LED's
• Led Flashlight

LED Headlamp

Though not a common sight, LED headlamps are in use by some men in their mean machines. Custom made and hands built are the options for this kind of head lamps. Though it is got a different effect, it has not caught up with the main production line market and the disadvantages of this being its complicated circuitry in comparison to the standard headlamps which give as much brightness and meet the requirements of the head lamp. I will tell you how the head lamp with the LED (Light emitting diode) is constructed and its pro's and con's.

The LED is two semi conductors placed together and when current is passed between the electrodes that are connected to the either ends, a light is produced. This light is relatively not hot; hence it does not burn out easily. As there is no component called a filament in the LED it has this advantage. The lighting of a head lamp using LED's is achieved by using an array of LED's in a circuit and the light is focused with the help of lenses.

The advantage of using LED's as a head lamp is that it is able to run for a longer period at a stretch (for as long as 20 hrs). The power consumption required for running the LED head lamp is as low as 6 volts.

The LED headlamp that I am going to describe here is a construction of an array of 24 LED'. These are mounted on a small chip of strawboard. The other things included in the circuit are a small 4 way dip switch and four different value resistors. The resistors used were 3. 3 ohm ¼ W resistors, one 6. 8 ohm ¼ W resistor, 15 ohm ¼ W resistor and a 27 ohm ¼ W resistor. A resistor is used in this circuit to set the current supplied to the LED's. Generally one resistor is used for each LED's. But then you can use one resistor for multiple LED's provided the LED's are connected in parallel. One small disadvantage when you use a parallel circuit is that there may be a manufacturing difference with a batch of LED's. This will mean some of them may have a lower forward voltage rating the details of which are not required here. I will tell you that this will cause more current to be conducted and the LED's may appear brighter, much brighter and a potentially lower life span. LED's are better when run at lower current levels and are brighter too.

The LED's were set in parallel and the DIP switch connected to the different resistors so that the DIP switch could work the resistors in and out. The LED's were mounted to the strip board by soldering them there. AA size lithium batteries were used for the purpose of a power pack. This gives us the advantage of running the illumination without the engine running. The illumination is brilliant with minimum power consumption. The LED headlamp thus made solves the purpose of the headlamp for vehicles.