Design a buffer circuit: (5 points) Prove a non-inverting op-amp buffer circuit that has a gain of unity (Show all analysis work for full credit) Draw a schematic diagram of the circuit. Explain how the circuit works. Design a comparator circuit: (5 points) Draw a schematic of the comparator that compares a reference voltage generated by a 10k potentiometer against the input voltage generated by the buffer circuit. (Circuit should generate a voltage that is either 0 or 15 volts). Explain how it works. Design a clamp circuit: (5 points) Draw a schematic diagram of a circuit that clamps the comparator's voltage from 15V to either 0V or 5V. Choose the current limiting resistor so that the maximum current drawn from the source is around 1 mA. (Show all analysis work for full credit). Explain how the circuit works