1. Using diodes, Zener diodes, resistors and Operational Amplifier in an Inverted-gain configuration, design a Limiter circuit with bounds of -8volts, and +12volts. Let the circuit's input voltage required to turn on the zener diode( in the case where the bounded circuit output is +12volts),be -4 volt. Calculate( show all details, including Input versus Output voltage curve) and indicate all circuit required circuit parameter values in order to achieve both positive and negative output bounds as specified earlier. Briefly and very clearly describe in words how the circuit works.
2. Design a Non-Inverting Op-Amp-based Amplifier with a gain of 10. Under what circuit parameter limits will the circuit's gain become equal to 1( Unity). What important signal processing applications does such a unity-gain amplifier provide.