MODERN
`DICTIONARY
`of
`ELECTRONICS
`
`SEVENTH EDITION
`
`REVISED AND UPDATED
`
`Rudolf F. Graf
`
`Boston Oxford Auckland
`
`Johannesburg Melbourne New Delhi
`
`PAGE 1 OF 3
`
`SONOS EXHIBIT 1017
`IPR of U.S. Pat. No. 8,942,252
`
`

`

`Newnes is an imprint of Butterworth-Heinemann.
`
`Copyright 0 1999 by Rudolf F. Graf
`
`-&A
`
`member of the Reed Elsevier Group.
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`Library of Congress Cataloging-in-Publication Data
`
`Graf, Rudolf F.
`Modem dictionary of electronics / Rudolf F. Graf.-7th
`revised and updated.
`p.
`cm.
`ISBN 0-7506-9866-7 (alk. paper)
`1. Electronics -Dictionaries.
`I. Title
`TK7804.G67 1999
`621.38 1 '03 - dc21
`
`ed.,
`
`99-17889
`CIP
`
`British Library Cataloguing-in-Publication Data
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`PAGE 2 OF 3
`
`SONOS EXHIBIT 1017
`IPR of U.S. Pat. No. 8,942,252
`
`

`

`smileys - snap-action contacts
`
`to an extent in comparing the strength of two stations, or
`the performance of two antennas at one location. See also
`signal-strength meter.
`smileys- Also called emoticons. Little symbols in a
`text message meant to be viewed sideways; used to express
`emotion. Smileys are often used in e-mail messages and
`newsgroup postings. Examples include :) (happy), :-(
`(sad), :-i (mad), :-o (wow!), :-@ (yell), and ;-) (wink).
`Smith chart-A
`special polar diagram used in the
`solution of transmission-line and waveguide problems. It
`consists of constant-resistance circles, constant-reactance
`circles, circles of constant standing-wave ratio, and radius
`lines that represent constant line-angle loci.
`s m o k e detector-A device that detects visible or
`invisible products of combustion. See also ionization
`smoke detector; photoelectric beam-type smoke detector;
`photoelectric spot-type smoke detector; resistance-bridge
`smoke detector.
`apply procedures that bring about a
`smooth-To
`decrease in or the elimination of rapid fluctuations in data.
`smoothing - Averaging by a mathematical process
`or by curve fitting, such as the method of least squares or
`exponential smoothing.
`smoothing choke- An iron-core choke coil that
`filters out fluctuations in the output current of a vacuum-
`tube rectifier or direct-current generator.
`smoothing circuit- Also called ripple filter. A
`combination of inductance and capacitance employed as a
`filter circuit to remove fluctuations in the output current of
`a vacuum-tube or semiconductor rectifier or direct-current
`generator.
`factor expressing the effec-
`smoothing factor-The
`tiveness of a filter in smoothing out ripple voltages.
`
`706
`smoothing filter- 1. Also called ripple filter. A
`filter used to remove fluctuations in the output current of a
`vacuum-tube or semiconductor rectifier or direct-current
`generator. 2. A low-pass filter in the vertical-deflection
`amplifier of a spectrum analyzer. It is used to smooth
`amplitude fluctuations in order to display spectral density
`and the average level of random signals as single lines.
`(The time constant of a smoothing filter is generally
`variable.)
`for the Society of Motion
`SMPTE-Abbreviation
`Picture and Television Engineers. (Formerly it was the
`SMPE, Society of Motion Picture Engineers.)
`SMT - Abbreviation for surface-mount technology.
`The mounting of components on the surface of a printed
`circuit board; as contrasted with through-hole mounting,
`in which component leads extend through the board.
`s n a k e -A
`tempered steel wire, usually of rectangular
`cross section. The snake is pushed through a run of
`conduit or through an inaccessible space such as a
`partition and used for drawing in wires.
`snap-acting switch-A
`switch in which there is
`a rapid motion of the contacts from one position to
`another position, or their return. This action is relatively
`independent of the rate of travel of the actuator.
`snap-action-1.
`In a mercury switch, the rapid
`motion of the mercury pool from one position to another.
`2. A rapid motion of the contacts from one position to
`another position, or their return (differential storing of
`energy). This action is relatively independent of the rate
`of travel of the actuator.
`snap-action contacts - A contact assembly such
`that the contacts remain in one of two positions of
`equilibrium with substantially constant contact pressure
`
`Smith chart.
`
`PAGE 3 OF 3
`
`SONOS EXHIBIT 1017
`IPR of U.S. Pat. No. 8,942,252
`
`