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Definition of "Amplifier" |
A device or circuit used to increase the power current, and voltage level of a signal. / The device that provides amplification (the increase in current, voltage, or power of a signal) without appreciably altering the original signal. Refer here for Transistor Amplifier Circuits. An electronic component that boosts the voltage or power level of a signal that is a linear replica of the input signal, but with greater power or voltage level, and sometimes with an impedance transformation. / An electrical circuit that produces an output that is a replica of the input. The output may be scaled or have increased drive, or it may provide isolation (so changes in output conditions do not affect the input or other outputs). It may perform other transformations. / An electronic amplifier, amplifier, or informally amp is an electronic device that increases the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In this sense, an amplifier modulates the output of the power supply. / An electronic amplifier, amplifier, or amp is an electronic device that increases the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In this sense, an amplifier modulates the output of the power supply. / The critical angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense medium are no longer refracted but totally reflected. / (1) a circuit element that has a linear input-output signal relationship, with gain in voltage, current, and/or power. |
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