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Basic Dictionary of Electronic Electro

Basic Dictionary of Electronics

Basic Electronic Dictionary with information on technical terms, acronyms and systems used in the field of Electrical and Electronics.

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AC : Abbreviation of “AC” in English or Portuguese CA

Attenuator: An attenuator is effectively the opposite of an amplifier, basically an attenuator is an electronic device that reduces the power of a signal without distorting its waveform. Normally an attenuator is used in audio and RF, but can also be used in other areas of electronics. An attenuator may be fixed or variable.

AC coupling is a circuit that passes an AC signal, blocking a DC voltage.



Butterworth Filtro– is a type of signal processing filter designed to have as a plan of possible frequency response in the passband . It is also referred to as a maximally flat magnitude filter . It was first described in 1930 by the British physicist and engineer Stephen Butterworth in his article entitled “The Theory of filters Amplifiers“.


Power supply, electronic source or simply source – is a circuit that provides power to an electronic device or other circuit. Its basic operation is simple, as an example, the source takes the voltage from a power outlet and converts alternating current to direct current and voltage 110 Volts to 12 Volts. The source also regulates and stabilizes the voltage to eliminate spikes and noise from the power grid. There DC power to DC.


Pity : is a mobile communication device that transmits on the same frequency band as another device to create a strong interference signals and block the transmission of the other device.


Polarity : Or Polarity elétrica (refers to the positive and negative) is present in every electrical circuit. electrons flow from the negative pole to the positive pole. In a direct current circuit (DC), one pole is always negative, the other pole is always positive and the electrons flow in one direction. In an alternating current (AC), they alternate between two negative and positive poles and the direction of electron flow reverses.


ROE – SWR or standing wave ratio: The standing wave ratio is the ratio between the amplitude of a standing wave in the transmission line at a point of maximum and your next point of minimum. ROE is used as a measure of efficiency of transmission lines, coaxial cables that conduzem radio frequency signals, used for purposes such as connecting radio transmitters and receivers with their antennas and signal distribution cable tv.

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