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Friday, 3 May 2024, 2:49 PM
Site: edulabs.org academy
Course: Activity Examples (Activity Examples)
Glossary: Electronics (Mike Jaroch)
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SUBSTRATE

Mounting surface for integrated circuits. May be semiconductor or insulator material depending on type of IC [14].

SUDDEN IONOSPHERIC DISTURBANCE

An irregular ionospheric disturbance that can totally blank out hf radio communications [10].

SUMMING NETWORK

A combination of two or more parallel resistors used in servosystems as an
error detector. The output of the network is the algebraic sum of the inputs [15].

SUPERHETERODYNE RECEIVER

A type of receiver that uses a mixer to convert the RF echo to an IF signal for amplification [18].

SUPERHIGH FREQUENCY

The band of frequencies from 3 gigahertz to 30 gigahertz [17].

SUPERSONIC

(1) Speed greater than the speed of sound [10]. (2) Ultrasonic.

SUPPORT SYSTEM

For a radar, a system that provides an auxiliary input, such as dry air, electrical
power, or liquid cooling [18].

SUPPRESSION

The process of eliminating an undesired portion of a signal [17].

SURFACE WAVE

Radio waves that travel along the contours of the earth, thereby being highly
attenuated [10].

SWAMPING RESISTOR

A resistor used to increase or "broaden" the bandwidth of a circuit [8].