I am struggling to solve this problem and my available time conflicts with my professors available time. Could any of you offer me some help, perhaps describe the method I would use to solve such a problem in a way that I can learn from it?
Thank you. (Problem follows):
The circuit designer wants to change the values of R_1 and R_2 so that the design output voltage v_o = 5 V is achieved when the load resistance is R_L = 200 kΩ rather than at no-load. The actual output voltage must not drop below 4.5 V when R_L = 100 kΩ . What is the smallest resistor value that can be used for R_1?
(R_1 and R_2 are unknown quantities.)