(Solved): A block diagram of a positive feedback oscillator is shown in Figure Q2(b). The gain of the amplif ...

A block diagram of a positive feedback oscillator is shown in Figure Q2(b). The gain of the amplifier, A and the phase shift is given as 4 and 0°, respectively. Meanwhile the gain attenuation, B of the feedback circuit is given as 0.4 with a phase shift of 130?. (i) (ii) As a technical engineer, with an appropriate explanation, analyse the condition of the oscillator. Suggest the solutions to ensure the output stays at the desired level while sustaining the oscillation if gain A is given as 5. Vcc Av B [C4, SP4] [6 marks] Figure Q2(b) [C4, SP4] [4 marks]