Hi! I was wondering if someone could show me how to make a voltage level indicator with LED diodes, resistors, and voltage sources. Please do not include zener diodes. On my lab sheet they feature a voltage divider circuit but they have resistors on the branches with the diodes, I was wondering if they were necessary. I have attached the link to the lab and the info sheet.
http://www.bu.edu/eng/courses/ec410/documents/ec410-lab2-spring08.pdf
http://www.bu.edu/eng/courses/ec410/documents/ec410-lab2-spring08.pdf