By G. H. Olsen B.Sc., C.Eng., A.M.I.E.R.E., A. Inst. P. (auth.)
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Additional resources for Electronics: A General Introduction for the Non-Specialist
9 further illustrates the point about the transmission of a variable voltage by a capacitor. c. Ievel and to transmit only variations of the input signal. This it does by not charging or discharging. In so far as charging and discharging occurs the capacitor is failing to transmit the variations properly. We shall see in later chapters that some charging and. discharging is inevitable, but we must arrange for this to be a minimum. The Inductance-Resistance (LR} Circuit Inductance in a circuit resists changes in current in that circuit, consequently if a series LR circuit is supplied with square waves, pulses, or other waveforms having fast rise times, the waveforms across the inductor or resistor will differ from that of the signal waveform.
It is, therefore, more than academic 60 THE RESPONSE OF CIRCUITS CONTAINING PASSIVE COMPONENTS Resultant waveform when odd harmonics up to the 15th are present 3 rd} 5th . 7 th Harmon1cs 9th . 11. A square wave consists of the fundamental plus all the odd harmonics out to an infinite frequency. The sum of the odd harmonics up to 15 is shown together with the appropriate odd harmonics up to the 9th interest that urges us to study the response of LCR networks to various applied sinusoidal voltages.
27. Lines of force representing magnetic fields around current-carrying wires in which the current is steady. Steady magnetic fields associated with conductors do not however induce currents in the wires. To induce a current the field must be varying opposite in sense to the magnetic field inducing the current. Instead of plungihg a magnet into the coillet us apply a valtage to the ends of the coil. If the valtage is steady the only Opposition to current is the resistance from which the coil is made.
Electronics: A General Introduction for the Non-Specialist by G. H. Olsen B.Sc., C.Eng., A.M.I.E.R.E., A. Inst. P. (auth.)