Electrical Definitions
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AC : The current whose magnitude and direction remain changing
at a definite rate is called alternating current or AC. |
Amplitude : The maximum value of an alternating quantity in positive
or negative direction w.r.t. its mean value is called amplitude. |
Alternator : An alternator is a machine which converts mechanical
energy into AC electrical energy.It is also known as an 'AC generator'. |
Active Electronics Components : The components which are capable of
amplifying or processing an electrical signal are known as active components e.g. diodes,triodes,transistors etc. |
Accumulator : It is a registor in a micro-processor in which the result of a given operation is stored
temporarily. |
Audible waves : Waves which can be heard by human ears are called audible
waves. Their frequency range exttends from 20 Hz to 20 KHz but it may vary from
person in accordance to his age. |
Amplifier : A triode or transistor based circuit which is capable to
increase the amplitude(or voltage) or power of an input signal is called an amplifier. |
Amplitude Modulation : The process of varying the amplitude of the sinusoidal
carrier wave by the amplitude of the modulating signal. |
Asynchronous Communication : A way of transmitting data serially from one device
to other,in which each transmitted character is processed by a start bit and followed by a stop
bit.This is also called start/stop transmission. |
Attenuation : The losses that occur and reduce progressively the amplitude and power
in a line.
These loses are of two types.(1) loses due to heat dissipation(2) dielectric loses |
AF choke: A choke designed to work in the frequency range of 20 to 20,000 Hz is called
an AF or audio frequency choke.It is used for suppressing the flow of a.f. currents in various filter and amplifier circuits. |
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