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"B",
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"F",
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"I",
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Previous section of 'A' terms
AMBIENT TEMPERATURE. The temperature of the air or liquid surrounding any object. The surrounding temperature such as the temperature of air surrounding a conductor in a compartment or within a piece of equipment.
AMERICAN WIRE GAUGE (AWG). The standards adopted in the United States for the measurement of wire sizes. AWG table
AMMETER. An instrument for measuring the amount of electron flow (in amperes). The instrument may measure direct current flow, alternating current flow or both depending on its construction. [Companies that produce Test Equipment]
AMPACITY. Current-carrying capacity of electric conductors expressed in amperes [see AWG table]. The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
AMPERE. The basic unit of electrical current. Applying one volt across a one ohm resistor will cause a current of one ampere to flow. The letter 'I' is used to denote current.
AMPERE-HOUR. Defined as a current of one ampere flowing for one hour. Multiply the current in amperes by
the time of flow in hours, the result is the total number of ampere-hours.
AMPERE-TURN. The magnetomotive force developed by 1 ampere of current flowing through a coil of one turn.
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.
AMPLIDYNE. A 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.
AMPLIFICATION. The process of increasing a signal in amplitude (as of voltage or current). 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.
AMPLIFICATION FACTOR. The voltage gain of an amplifier with no load on the output.
AMPLIFIER. The device that provides amplification (the increase in current, voltage, or power of a signal) without appreciably altering the original signal. Refer here for Transistor Amplifier Circuits
AMPLITUDE. The size of a signal as measured from a reference line to a maximum value above or below the line. Generally used to describe voltage, current, or power.
AMPLITUDE DISTORTION. Distortion that is present in an amplifier when the amplitude of the output signal fails to follow exactly any increase or decrease in the amplitude of the input signal.
| AMPLITUDE MODULATION. Any method of varying the amplitude of an electromagnetic carrier frequency in accordance with the intelligence to be transmitted. |
 Amplitude Modulation |
AMPLITUDE STABILITY. Amplitude stability refers to the ability of the oscillator to maintain a constant amplitude in the output waveform.
AM Receiver Block Diagram
AM Receiver. A receiver that decodes an Amplitude Modulated signal to recover encoded information.
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