The Analysis and Design of Linear Circuits 7th. Edition by Roland E. Thomas, Albert J. Rosa, Gregory J. Toussaint | 9781118065587 | 1118065581 | Holooly

Circuit Analysis

The Analysis and Design of Linear Circuits

336 SOLVED PROBLEMS

Question: 17.11

The two-port network Na in Figure 17–16 is an amplifier with h-parameters h11a = 500 Ω, h12a = 0, h21a = –500, and h22a = 0.1 S. The two-port Nb is a passive resistance circuit that provides feedback around the amplifier. The purpose of this example is to find the voltage gain of the overall ...

Verified Answer:

To get a two-port description of this connection w...

Question: 17.10

The networks Na and Nb in Figure 17–15 are connected in cascade and have two-port matrices [ta] = [3 25 0.2 2] and [zb] = [200 0 -2000 20] Ω Find the current gain of this cascade connection. ...

Verified Answer:

To get a two-port description of this connection w...

Question: 17.9

The networks Na and Nb in Figure 17–14 are connected in parallel and have two-port matrices [za] = [15 5 5 10] Ω and [yb] = [0.2 -0.2 -0.2 0.7] S Find the y-parameters of the parallel connection. ...

Verified Answer:

To get the desired y-parameters we use the fact th...

Question: 17.8

The t-parameters of a two-port network are A = –1, B = j50 Ω, C = j20 mS, and D = 0. Find the input impedance when a 50-Ω resistor is connected across the output port. ...

Verified Answer:

The i-ν relationships of the two-port network are ...

Question: 17.7

Find the t-parameters of the two-port network in Figure 17–10. ...

Verified Answer:

With the output open

(-I_{2} = 0)

, ...

Question: 17.6

The h-parameters of a two-port network are h11 = 2kΩ, h12 = –2, h21 = 10, and h22 = 500 μS. A 10-V voltage source is connected at the input port. Find the Norton equivalent circuit at the output port. ...

Verified Answer:

The given h-parameters give the i-ν relationships ...

Question: 17.4

The impedance parameters of a two-port network are z11 = 30Ω, z12 = z21 = 10 Ω, and z22 = 20 Ω. Find the admittance parameters of the network. ...

Verified Answer:

The impedance matrix for the two-port network is [...

Question: 17.3

Find the admittance parameters of the two-port circuit in Figure 17–4. ...

Verified Answer:

A short circuit at port 2 connects admittances [la...

Question: 17.2

A 5-V voltage source is connected at port 1 in Figure 17–2 and a 50-Ω resistor is connected at port 2. Find the port currents I1 and I2. ...

Verified Answer:

Using the impedance parameters found in Example 17...

Question: 16.23

In Figure 16–27 the source at bus 1 supplies two load buses through transmission lines with ZW1 = 45 + j250 Ω/phase and ZW2 = 50 + j330 Ω/phase. Line 1 connects the source bus to a load at bus 2 that draws a complex power of S2 = 1.5 + j0.5 MVA. Line2 connects bus 2 to a load at bus 3 that draws a ...

Verified Answer:

For the given values of

V_{L3}

and ...

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