BUT WE ONLY WANT THINGS THAT MATTER TO A TWO YEAR LEVEL. No “quadrature amplitude modulation” or anything like that. Another order could be definitions by basic electronics components definitions pdf such as DC, AC, radio, integrated circuit, etc.
Consists of a periodic oscillation between two different voltages. Usually said to look like a sine wave, but is not always.
In radio communications, a signal controls the amplitude of a carrier wave that is at a much higher, constant frequency. The carrier wave is filtered out and a loudspeaker plays based on the amplitude of the signal. The SI unit for current I.
Commonly spoken as “amps”, “milliamps”, etc. 10-7 newton per meter of length. The other electronics units are derived units based on the ampere definition.
To increase the strength of the signal. Often an “amplifier” is used to pass a signal with both an increase or a decrease in gain. Means up the path from a negative to a positive voltage.