![](https://digitalab.org/wp-content/uploads/ledtorch_adjustable-brightness_1.png)
LED Torch with adjustable brightness
The Led torch with adjustable brightness circuit uses LM3914 as the basis of a 10 step variable brightness current-regulated white LED . This circuit has only four components in the control and regulation circuit: R1,R2, VR1 and LM3914. Part List 1.…