Abbreviation for "ampere" a unit of electrical current.

Loss or dissipation of energy as it travels through a medium, Example: radio waves lose some of their energy as they travel through the atmosphere.

Alternating current

Alternating current or direct current

Trivalent atoms that accept free electrons from pentavalent atoms.

Circuit that passes an AC signal while blocking a DC voltage.

Device used to transform mechanical energy into AC electrical power.

A graph representing all possible combinations of AC output voltage and current for an amplifier.

Power supply that delivers an AC voltage.

A component that changes the amplitude of a signal between input and output.

A filter that uses an amplifier in addition to reactive components to pass or reject selected frequencies.

The region of BJT operation between saturation and cutoff used for linear amplification.

A voltage in which the polarity alternates.

Analog to digital

Analog-to-digital converter

(symbol "Y") Measure of how easily AC will flow through a circuit. Admittance is the reciprocal of impedance and is measured in siemens.

Audio frequency

Automatic fine tuning

Automatic frequency control

Automatic flow controller, used in controlling the flow of gases under pressure into a vacuum system

Automatic gain control

Ampere hour

Current gain

A primary cell that delivers more current than a carbon-zinc cell. Also known as an "alkaline manganese cell".

Spring clip on the end of a test lead used to make a temporary connection.

Ratio of collector current to emitter current in a bipolar junction transistor (BJT). Greek letter alpha "a" is the symbol used.

An electric current that rises to a maximum in one direction, falls back to zero and then rises to a maximum in the opposite direction and then repeats.

Name for an AC generator.

Amplitude modulation

Amplitude modulation or Frequency modulation

Analog multimeter

A meter used to measure current.

Unit of electrical current.

A circuit that increases the voltage, current, or power of a signal.

Magnitude or size of a signal voltage or current.

Information represented as continuosly varying voltage or current rather than in discrete levels as opposed to digital data varying between two discrete levels.

The positive electrode or terminal of a device. The "P" material of a diode.

A device that converts an electrical wave into an electromagnetic wave that radiates away from the antenna.

A device that converts a radiated electromagnetic wave into an electrical wave.

Antilogarithm

Power gain

Automatic phase control

Power attained in an AC circuit as a product of effective voltage and current which reach their peak at different times.

Discharge of electricity through a gas such as lightning discharging through the atmosphere.

The rotating or moving component of a magnetic circuit.

An oscillator that uses an isolation transformer to achieve positive feedback from output to input.

An oscillator that produces a square wave output from a DC voltage.

The smallest particle that an element can be broken down into and still maintain its unique identity.

The number of positive charges or protons in the nucleus of an atom.

To reduce the amplitude of an action or signal. The opposite of amplification.

Relating to frequencies that can be heard by the human ear. Approximately 20 Hz. to 20 kHz.

A single winding transformer where the output is taken from taps on the winding.

A value of voltage or current where the area of the wave above the value equals the area of the wave below the value.

Abbreviation for "automatic volume control"

Aviation electronics.

Voltage gain

Automatic volume control

American wire gauge