convert -12dc to +5vdc
Friends, thanks for ur replies. Actually, my need is to interface 4 inch seven segment displays with the microcontroller.I want to control the segments with transistors.I require an output of 12v from the transistors, which is to be given to the common anode of the displays.I have used CL100,BC547,2N3906,2N2222 transistors. Iam unable to control the segment with the transistor's base(output from the microcontroller). My need is, if I give "High(5v)" from the controller, I require 12v dc output to light uo the segments. If I give low, the segments should OFF. Plz give me ur kind suggestions to do so.