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S

SHUNT VOLTAGE REGULATOR

A regulator whose regulating device is in parallel with the load resistance [7].


SHUNT-DIODE DETECTOR

A diode detector in which the diode is in parallel with the input voltage and the load impedance. Also known as a current detector because it operates with smaller input levels [12].


SHUNT-WOUND MOTORS AND GENERATORS

Machines in which the armature and field windings are connected in parallel (shunt) with each other [5].


SIGNAL

A general term used to describe any ac or dc of interest in a circuit; for example, input signal [8] [15].


SIGNAL DISTORTION

Any unwanted change to the signal [12].

SIGNIFICANT SIDEBANDS

Those sidebands with significantly large amplitude [12].

SILICON

A metallic element which, in its pure state, is used as a semiconductor [7].

SILICON-CONTROLLED RECTIFIER

A semiconductor device that functions as an electrically controlled switch [7].


SINE WAVE

(1) The curve traced by the projection on a uniform time scale of the end of a rotating arm, or vector. Also known as a sinusoidal wave [2]. (2) The basic synchronous alternating waveform for all complex waveforms [12].


SINGLE LINE DIAGRAM

A diagram which shows, by means of single lines and graphic symbols, the
course of an electric circuit or system of circuits and the component devices or parts used therein [4].



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