Choosing athree-cell, 4.5V supply results in a lowervoltage of 0.33V per cell. A 4.5V supplycan power as many as eight LEDs.Tests show that this circuit works from4.5V to 0.94V, which is lower than ...

Posted in LED Hacks, Parts Tagged dc-dc, led, low power, mcp1640, power supply, safety Post navigation ← 3D Printed Berlin Uhr Is An Attractive Germanic Clock ...