Electronics (Mike Jaroch)


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L

LINEAR IMPEDANCE

An impedance in which a change in current through a device changes in direct
proportion to the voltage applied to the device [12].


LIQUID

One of the three states of matter. It has a definite volume but no definite form (water is a liquid) [1].


LIQUID-COOLING SYSTEM

Source of cooling for high-heat producing equipments, such as microwave components, radar repeaters, and transmitters [18].


LISSAJOUS PATTERN

A combined, simultaneous display of the amplitude and phase relationships of
two input signals on a CRT [17].


LOAD

(1) A device through which an electric current flows and which changes electrical energy into another form. (2) Power consumed by a device or circuit in performing its function [1] [13].


LOAD END

See OUTPUT END [10].

LOAD ISOLATOR

A passive attenuator in which the loss in one direction is much greater than that in the opposite direction. One example is a ferrite isolator for waveguides that allows energy to travel in only one direction [11].


LOADING

See LUMPED-IMPEDANCE TUNING [10].

LOADING EFFECT

The effect of a voltmeter upon the circuit being measured that results in an
inaccurate measurement. Loading effect is minimized by using a voltmeter with an internal resistance many times higher than the resistance of the circuit being measured [3].


LOBE

An area of greater signal strength in the transmission pattern of an antenna [10] [18].


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