Select ( R1 ) and ( R2 ) to ensure that the value of ( A1 ) does not exceed 5V for all light conditions. Calculate the maximum voltage your circuit can feed to pin A1. Show your work here:
a) ( R1 = 1kΩ, R2 = 500Ω )
b) ( R1 = 2kΩ, R2 = 1kΩ )
c) ( R1 = 500Ω, R2 = 250Ω )
d) ( R1 = 1.5kΩ, R2 = 750Ω )