Tag Archives: alternating current

Power Amplifier: Types, Classifications, and Applications

Power Amplifier A

What is an amplifier? An amplifier is a device used to increase an input signal’s voltage, current, or power. A weak electrical signal is taken in and converted into a stronger output signal. External power is used to cause this change. There are three main classifications of amplifiers depending on the changes it makes to… Read More »

Understanding Alternating Current or AC Current

Nonsinusoidal Waveforms in AC Power current

The electricity which we use at home is normally the alternating current or AC. AC current is result of alternation of the generator armature or alternator. The electricity or current flows in one direction and then reverse direction. Each cycle in AC current consists of a positive and a negative alternation. During AC generation waveform produced… Read More »