Education 14.8 Waveguides adminJan 26, 20200 A waveguide is a special form of transmission line consisting of a hollow, metal tube. The tube wall provides...

Education 14.7 Impedance Transformation adminJan 26, 20200 Standing waves at the resonant frequency points of an open- or short-circuited transmission line produce unusual...

Education 14.5 Long and Short Transmission Lines adminJan 26, 20200 In DC and low-frequency AC circuits, the characteristic impedance of parallel wires is usually ignored. This includes...

Education 14.4 Finite-length Transmission Lines adminJan 26, 20200 A transmission line of infinite length is an interesting abstraction, but physically impossible. All transmission lines...

Education 14.3 Characteristic Impedance in Transmission lines adminJan 26, 20200 The Parallel Wires of Infinite Length Suppose, though, that we had a set of parallel wires of infinite length, with no...

Education 14.2 Circuits and the Speed of Light adminJan 26, 20200 Suppose we had a simple one-battery, one-lamp circuit controlled by a switch. When the switch is closed, the lamp...

Education 14.1 A 50-Ohm Cable? adminJan 26, 20200 Early in my explorations of electricity, I came across a length of coaxial cable with a label of “50 ohms” printed...

Education 6.6 Q Factor and Bandwidth of a Resonant Circuit adminJan 26, 20200 The Q, or quality, factor of a resonant circuit is a measure of the “goodness” or quality of a resonant circuit....

Education 6.5 Resonance in Series-Parallel Circuits adminJan 26, 20200 In simple reactive circuits with little or no resistance, the effects of radically altered impedance will manifest at...

Education 6.4 Applications of Resonance adminJan 26, 20200 So far, the phenomenon of resonance appears to be a useless curiosity, or at most a nuisance to be avoided (especially...

Education 6.3 Simple Series Resonance adminJan 26, 20200 A similar effect happens in series inductive/capacitive circuits. When a state of resonance is reached (capacitive and...

Education 6.2 Simple Parallel (Tank Circuit) Resonance adminJan 26, 20200 Resonance in a Tank Circuit A condition of resonance will be experienced in a tank circuit when the reactance of the...

Education 6.1 An Electric Pendulum adminJan 26, 20200 Capacitors store energy in the form of an electric field, and electrically manifest that stored energy as a potential:...