My problem is to keep a LED glowing constant as the output of my circuit varies from 2.9V to 10V. The LED now glows according to the output voltage. I would like to keep it glowing constant. I have tried using LM317T but, for the range 2.9V to 3.7V, the LED remains off as LM317T needs a min voltage of 3.7V at Vin.
Any suggestions?
Any suggestions?