Final answer:
To find V0 and Va, we analyze the diodes' behavior with a constant forward voltage of 0.7 V. For v1 = 1V, forward-biased diodes lead to V0 = Va = 0.3 V; For v1 = -1V, reverse-biased diodes result in V0 = Va = -1 V.
Step-by-step explanation:
To determine the output voltages V0 and Va in an ideal op-amp circuit with diodes, we need to analyze the behavior of the diodes with the given input voltages using their offset model. According to the offset model, the diode behaves as a short circuit when forward-biased with a voltage drop of 0.7 V, and as an open circuit with zero current flow when reverse-biased.
For v1 = 1V, the diode is forward-biased and conducts current, leading to a voltage drop of 0.7 V across the diode. Therefore, Va will be 0.3 V (1V - 0.7 V). Since it is an ideal op-amp, V0 will be the same as Va, resulting in V0 = 0.3 V.
For v1 = -1V, the diode is reverse-biased, and there is no current flow through the diode. In this case, because the current is zero, there will be no voltage drop across the diode, and Va remains at -1 V. Again, since we have an ideal op-amp V0 will follow Va, resulting in V0 = -1 V.