Neets Master Glossary

1-40 LINE-PULSING MODULATOR—Circuit that stores energy and forms pulses in the same circuit element, usually the pulse-forming network (pfn) [18]. LIN-LOG AMPLIFIER—An amplifier in which the response is linear for weak signals and logarithmic for large signals [18]. 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]. 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]. 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]. LOBE—An area of greater signal strength in the transmission pattern of an antenna [10] [18]. LOCAL ACTION—A continuation of current flow within a battery cell when there is no external load. Caused by impurities in the electrode [1]. LOGARITHMIC RECEIVER—Receiver that uses a linear logarithmic amplifier (lin-log) instead of a normal linear amplifier [18]. LOGIC—The basic principles and applications of truth tables, interconnections of off-on circuit elements, and other factors involved in mathematical computation in automatic data processing systems and other devices [13]. LOGIC CIRCUIT—The primary control information processor in digital equipment; made up of electronic gates and so named because their operation is described by simple equations of a specialized logic algebra [13]. LOGIC DIAGRAM—In computers and data processing equipment, a diagram representing the logical elements and their interconnections without necessarily expressing construction or engineering details [13]. LOGIC ELEMENT—The smallest building blocks that can be represented by operators in an appropriate system of symbolic logic. Typical logic elements are the AND-gate and the flip-flop, which can be represented as operators in a suitable symbolic logic. Also a device that performs the logic function [13].