pseudo-, quasi- semi- and. Pseudo- comes from the Greek for false/lie and refers particularly to something not genuine. Quasi- comes from the Latin for almost and refers to something that is almost something else. Semi- is the Latin for half and refers to something that is half-something else In late usage, however, all three have been used to mean sort-of-.
2 Channel Amplifiers. 2 channel amps, or stereo amplifiers, are simple solution for upgrading a car audio/stereo system. As a general rule, 2-channel amps are intended to output sound that can be faded between a left speaker and a right speaker, however; many stereo amplifiers can be to power a car subwoofer. Recently Viewed.
In this example the amplifier has a voltage gain of 3; that is at any instant v o = 3 v i {\displaystyle v_{o}=3v_{i}\,}. An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the power of a signal (a time-varying voltage or current). An amplifier uses electric power from a power supply to increase the amplitude of a signal. The amount of amplification provided by an amplifier is measured by its gain: the ratio of output voltage, current, or power to input. An amplifier is a circuit that has a power gain greater than one. An amplifier can either be a separate piece of equipment or an electrical circuit contained within another device. Amplification is fundamental to modern electronics, and amplifiers are widely used in almost all electronic equipment.