pranam77
Advanced Member level 5
led power consumption
Hello every one. Wish you all a happy and prosperous New year 2009.
While experimenting with white LED's i tried to run 60 LED's with 6 volts 4.5 ah battery, and connected as given in the schematic. I have assumed each LED has a forward drop of 3.3 volts as i didint get any specifications from the manufacturer. The led's are of China origin. Too the current was guessed to 20 Ma and a resistor of 150 ohm was connected in sieres of all the 60 LED's. Now when connected to the
battery, total consumption came to exactly 1.015 amphere. Mean it will glow for approximately 2.5 to 3 hours on a 4.5 ah battery. My question is, there any way to reduce the total current without reducing the LED brightness so that i can get more running hours with same battery. Can i impliment some driver circuits so that the voltage is raised and the LED's can be connected in seires? May i expect sugesstions, links, schematics or Ideas in this regard?.
Hello every one. Wish you all a happy and prosperous New year 2009.
While experimenting with white LED's i tried to run 60 LED's with 6 volts 4.5 ah battery, and connected as given in the schematic. I have assumed each LED has a forward drop of 3.3 volts as i didint get any specifications from the manufacturer. The led's are of China origin. Too the current was guessed to 20 Ma and a resistor of 150 ohm was connected in sieres of all the 60 LED's. Now when connected to the
battery, total consumption came to exactly 1.015 amphere. Mean it will glow for approximately 2.5 to 3 hours on a 4.5 ah battery. My question is, there any way to reduce the total current without reducing the LED brightness so that i can get more running hours with same battery. Can i impliment some driver circuits so that the voltage is raised and the LED's can be connected in seires? May i expect sugesstions, links, schematics or Ideas in this regard?.