A waveguide is a special form of transmission line consisting of a hollow, metal tube. The tube wall provides distributed inductance, while the empty space between the tube walls provide distributed capacitance: Figure 20.1 Fig: Quarter wave 150 transmission line: Figure 20.1: Quarter wave 150 transmission line section matches 75 line to 300 antenna. Figure [...]
So far in our discussions on electricity and electric circuits, we have not discussed in any detail how batteries function. Rather, we have simply assumed that they produce constant voltage through some sort of mysterious process. Here, we will explore that process to some degree and cover some of the practical considerations involved with real [...]
The Series ckt diagram as shown in figure that are combining the two components together in series form and investigate the effects. (Figure 14.1) Figure 14.1: Series capacitor inductor circuit: voltage lags current by 0o to 90o. The resistor will offer 5 of resistance to AC current regardless of frequency, while the capacitor will offer 26.5258 of [...]
The first and most straightforward network analysis technique is called the Branch Current Method .In this method, we assume directions of currents in a network, then write equations describing their relationships to each other through Kirchhoff’s and Ohm Laws. Once we have one equation for every unknown current, we can solve the simultaneous equations and [...]
In the earlier section, we explored what would happen in simple resistor-only and inductor-only AC circuits. Now we will mix the two components together in series form and investigate the effects. Take this circuit as an example to work with: (Figure 12.1) Figure 12.1: Series resistor inductor circuit: Current lags applied voltage by 0o to [...]
If vectors with uncommon angles are added, their magnitudes (lengths) add up quite differently than that of scalar magnitudes: (Figure 6.1) Figure 6.1: Vector magnitudes do not directly add for unequal angles If two AC voltages – 90o out of phase – are added together by being connected in series, their voltage magnitude does not [...]
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