Education 1.7 Attenuators adminJan 27, 2020 What is Attenuators? Attenuators are passive devices. It is convenient to discuss them along with decibels....
Education 1.6 Absolute dB scales adminJan 27, 2020 Decibel as Absolute Unit of Power It is also possible to use the decibel as a unit of absolute power, in addition to...
Education 1.5 Decibels adminJan 27, 2020 The Bel is Used to Represent Gain In its simplest form, an amplifier’s gain is a ratio of output over input. Like all...
Education 1.4 Amplifier Gain adminJan 27, 2020 The Voltage Gain Because amplifiers have the ability to increase the magnitude of an input signal, it is useful to be...
Education 1.3 Amplifiers adminJan 27, 2020 Practical Benefit of Active Devices The practical benefit of active devices is their amplifying ability. Whether the...
Education 1.2 Active Versus Passive Devices adminJan 27, 2020 Passive Devices Components incapable of controlling current by means of another electrical signal are called passive...
Education 1.1 From Electric to Electronic adminJan 27, 2020 Introduction This third volume of the book series Lessons In Electric Circuits makes a departure from the former two in...
Education 14.8 Waveguides adminJan 26, 2020 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, 2020 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, 2020 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, 2020 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, 2020 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, 2020 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, 2020 Early in my explorations of electricity, I came across a length of coaxial cable with a label of “50 ohms” printed...
Education 13.12 AC Commutator Motors adminJan 26, 2020 Charles Proteus Steinmetz’s first job after arriving in America was to investigate problems encountered in the design...