(Solved): (a) Sketch the I-V curves of an ideal and real germanium diode. Label the sketched diagrams clearl ...

(a) Sketch the I-V curves of an ideal and real germanium diode. Label the sketched diagrams clearly. [6 marks] (b) A circuit is shown in Figure 1. The diodes are silicon type with a forwardbiased voltage of \( 0.7 \mathrm{~V} \). Figure 1 (i) Calculate the diode current for \( I_{D 1} \) and \( I_{D 2} \). (ii) Determine the biasing conditions of diodes \( \mathrm{D} 1 \) and \( \mathrm{D} 2 \). [8 marks] (iii) What are the voltages between nodes \( A \) and \( B \) ? [4 marks] (iv) Calculate the voltages at nodes \( A \) and \( B \). [3 marks] [4 marks]