In Figure 17-27, the network \(N_{\mathrm{a}}\) is an active device with \(h\)-parameters \(h_{11}=10 \mathrm{k} \Omega, h_{12}=0, h_{21}=-5 \times 10^{3}\), and \(h\) \({ }_{22}=50 \mathrm{mS}\). The network \(N_{\mathrm{b}}\) is a resistive feedback circuit with \(z\) -parameters \(z_{11}=2 R\) and \(z_{12}=z_{21}=z_{22}=R\). Find a value of \(R\) such that the voltage gain of the series connection is \(T_{\mathrm{V}}=2\).

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Na Nobody