"A"
"B"
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P",
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z"
Previous set of "S" terms.
SHUNT. A resistive device placed in parallel with another component. Appreciable current may flow
through it and an appreciable voltage may exist across it.
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.
SHUNT-FED OSCILLATOR. An oscillator that receives its dc power for the transistor or tube through a
path both separate from and parallel to the tank circuit.
SHUNT PEAKING. A technique used to improve high-frequency response in which a peaking coil is
placed in parallel (shunt) with the output signal path.
SHUNT RESISTOR. A resistor in parallel. In an ammeter, shunt resistors are used to provide multiple
ranges.
SHUNT VOLTAGE REGULATOR. A regulator whose regulating device is in parallel with the load
resistance.
SHUNT-WOUND MOTORS AND GENERATORS. Machines in which the armature and field
windings are connected in parallel (shunt) with each other.
SIEMENS. The preferred term for MHO.
SIGNAL. A general term used to describe any ac or dc of interest in a circuit; for example, input signal.
SIGNAL DISTORTION. Any unwanted change to the signal.
SIGNIFICANT SIDEBANDS. Those side-bands with significantly large amplitude.
SILICON. A metallic element which, in its pure state, is used as a semiconductor.
SILICON-CONTROLLED RECTIFIER (SCR). A semiconductor device that functions as an
electrically controlled switch.
SINE WAVE. 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. The basic synchronous alternating waveform for all
complex waveforms.
SINGLE-ENDED MIXER. See UNBALANCED CRYSTAL MIXER.
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.
SINGLE, STATIONARY-LOBE SCANNING SYSTEM. Antenna (with a single, stationary beam) that
is rotated to obtain 360-degree coverage.
SINK CURRENT. An integrated circuit sinks current when current is flowing from a load [another device] into the circuits output. This is considered negative current to the IC. FanOut is a related term.
SKIN EFFECT. The tendency for alternating current to concentrate in the surface layer of a conductor.
The effect increases with frequency and serves to increase the effective resistance of the conductor.
SKIP DISTANCE. The distance from a transmitter to the point where the sky wave is first returned to
earth.
SKIP ZONE. A zone of silence between the point where the ground wave becomes too weak for reception
and the sky wave is first returned to earth.
Next set of "S" Terms and definitions
