SMD LED

Classic LED flashlight circuit

Here is a classic circuit for LED flashlight production for your reference. LED flashlight has the advantages of power saving, durability and brightness.

1, 1.5V low cost LED driver circuit

The magnetic ring is selected from T9*5*3/2K, or T10*6*5, etc., and the double wire of 0.3mm enameled wire is wound around 20T, and connected according to the same name in the figure.

TR1 selects 8050 or 9014, D1 selects 4937 or 107, PCB is made with a piece of waste board.

2, 1.2v 3.4v power circuit