Led Driver Board
grabcad
The lamp features four ultra-white LEDs with a regulated light output ranging from 10Vdc to approximately 20Vdc at 40ma. The LM317L regulator and resistor function as a current regulator, set to maintain a constant 40ma. Current flows through one pair of LEDs, then passes through the regulator before reaching the other pair, ultimately returning to the power source. A capacitor filters out electrical noise on the power supply lines. For detailed circuit information, refer to the Autocad 2007.zip file.
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