Consider the circuit in Figure P2.49. Each diode cut-in voltage is \(V_{\gamma}=0.7 \mathrm{~V}\).

(a) For \(R_{2}=1.1 \mathrm{k} \Omega\), determine \(I_{D 1}, I_{D 2}\), and \(V_{A}\).

(b) Repeat part (a) for \(R_{2}=2.5 \mathrm{k} \Omega\).

(c) Find \(R_{2}\) such that \(V_{A}=0\). What are the values of \(I_{D 1}\) and \(I_{D 2}\) ?

Transcribed Image Text:

ID. +5 V 1= 5 mA 10 V D D D 412 R Figure P2.48 -2 V +5 V Ip D R = 2 1=5 mA 12 D2 R -5 V Figure P2.49