Electronics (Mike Jaroch)


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A

AMBIENT TEMPERATURE

The surrounding temperature such as the temperature of air surrounding a
conductor in a compartment or within a piece of equipment [4].


AMBIGUOUS RETURNS

Echoes that exceed the prt of a radar and appear at incorrect ranges [18].

AMMETER

An instrument for measuring the amount of electron flow (in amperes) [1] [3] [6].

AMPERE

The basic unit of electrical current [1].

AMPERE-TURN

The magnetomotive force developed by 1 ampere of current flowing through a coil of one turn [8].


AMPERITE (BALLAST) TUBE

A current-controlling resistance device designed to maintain
substantially constant current over a specified range of variation in applied voltage or resistance of a
series circuit [6].


AMPLIDYNE

A special dc generator in which a small dc voltage applied to field windings controls a large output voltage from the generator. In effect, an amplidyne is a rotary amplifier that often times produces gain of approximately 10,000 [5].


AMPLIFICATION

(1) The process of enlarging a signal in amplitude (as of voltage or current) [8]. (2) The ratio of output magnitude to input magnitude in a device that is intended to produce an output that is an enlarged reproduction of its input [6] [7].


AMPLIFICATION FACTOR

The voltage gain of an amplifier with no load on the output [6] [7].

AMPLIFIER

AMPLIFIER—The device that provides amplification (the increase in current, voltage, or power of a signal) without appreciably altering the original signal [7] [8].



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