The diodes in the circuit of Fig. P1.48 are such that at 1 mA they drop 700 mV and also have nVT 5 26 mV. If VS 5 3 V, fi nd suitable resistance values to bias the diodes at I D1 5 0.5 mA, I D2 5 0.2...

The diodes in the circuit of Fig. P1.48 are such that at 1 mA they drop 700 mV and also have nVT 5 26 mV. If VS 5 3 V, fi nd suitable resistance values to bias the diodes at I D1 5 0.5 mA, I D2 5 0.2 mA, and I D3 5 0.1 mA. Hint: This problem can be solved using the rules of thumb.