Describe the behaviour of the following circuits. In particular explain how the behaviour of the circuits differ from what would be expected if the device was ideal. A voltage is

applied to the circuit v(t) as shown. The input voltage is a ramp which starts from 0V at t = 0 and rises to 0.45V over 0.8 sec as shown in the table below. Determine the voltage across the diode and determine if the behaviour is linear. b) For the circuit in figure 3 below explain its function and determine the voltage at the output. (assume the op amp has a +- 12V supply) The input voltage is given in figure 2:-