LED Driver using 7805 and LM317

Posted on

LED Driver using 7805 The 7805 can be converted into a content-current device by connecting a resistor as shown below.   As the 12v rises from 0v, the 7805 starts to work and when the input voltage is 4v, the output is 1v as a minimum of 3v is lost across the 7805. The voltage rises […]