14.8 Waveguides
A waveguide is a special form of transmission line consisting of a hollow, metal tube. The tube wall provides...
Tag: Resonance
14.7 Impedance Transformation
Standing waves at the resonant frequency points of an open- or short-circuited transmission line produce unusual...
14.5 Long and Short Transmission Lines
In DC and low-frequency AC circuits, the characteristic impedance of parallel wires is usually ignored. This includes...
14.4 Finite-length Transmission Lines
A transmission line of infinite length is an interesting abstraction, but physically impossible. All transmission lines...
14.3 Characteristic Impedance in Transmission lines
The Parallel Wires of Infinite Length Suppose, though, that we had a set of parallel wires of infinite length, with no...
14.2 Circuits and the Speed of Light
Suppose we had a simple one-battery, one-lamp circuit controlled by a switch. When the switch is closed, the lamp...
14.1 A 50-Ohm Cable?
Early in my explorations of electricity, I came across a length of coaxial cable with a label of “50 ohms” printed...
6.6 Q Factor and Bandwidth of a Resonant Circuit
The Q, or quality, factor of a resonant circuit is a measure of the “goodness” or quality of a resonant circuit....
6.5 Resonance in Series-Parallel Circuits
In simple reactive circuits with little or no resistance, the effects of radically altered impedance will manifest at...
6.4 Applications of Resonance
So far, the phenomenon of resonance appears to be a useless curiosity, or at most a nuisance to be avoided (especially...
6.3 Simple Series Resonance
A similar effect happens in series inductive/capacitive circuits. When a state of resonance is reached (capacitive and...
6.2 Simple Parallel (Tank Circuit) Resonance
Resonance in a Tank Circuit A condition of resonance will be experienced in a tank circuit when the reactance of the...
6.1 An Electric Pendulum
Capacitors store energy in the form of an electric field, and electrically manifest that stored energy as a potential:...
