(a) In the circuit of Fig. P1.47, D2 is known to have, at room temperature, Is 5 2 fA and nVT 5 26 mV. If it found that V 5 340 mV, what is the reverse current IR of D1? (b) If in the circuit of (a) a...

(a) In the circuit of Fig. P1.47, D2 is known to have, at room temperature, Is 5 2 fA and nVT 5 26 mV. If it found that V 5 340 mV, what is the reverse current IR of D1?

(b) If in the circuit of (a) a diode D3 identical to D1 is connected in parallel with D1 itself (anode with anode and cathode with cathode), what is the new value of V? (c) If in the circuit of (a) a diode D4 identical to D2 is connected in parallel with D2 itself (anode with anode and cathode with cathode), what is the new value of V ? (d) Going back to the original circuit of (a), if temperature is increased by 50 8C, what is the new value of V? Hint: like a good practicing engineer, solve this problem using the rules of thumb.