Ampiteenkäyrä

Ampiteenkäyrä, also known as the amplifier curve or characteristic curve, is a graphical representation of the relationship between the input and output signals of an electronic amplifier. It illustrates how the amplifier's gain, or amplification factor, changes with varying input signal levels. Typically, the horizontal axis represents the input signal amplitude, while the vertical axis represents the output signal amplitude.

The shape of the ampiteenkäyrä reveals crucial information about the amplifier's behavior. For an ideal linear amplifier, the curve would be a straight line, indicating that the output signal is a scaled replica of the input signal, with the scaling factor being the amplifier's gain. However, in real amplifiers, the curve often deviates from linearity, especially at higher input signal levels.

Common shapes include saturation, where the output signal no longer increases proportionally with the input, and clipping, where the output signal is limited to a maximum value. These non-linearities can lead to distortion of the signal. The ampiteenkäyrä is essential for understanding an amplifier's performance limits, its susceptibility to distortion, and its suitability for specific applications. Engineers use these curves to select appropriate amplifiers and to design circuits that minimize unwanted signal alterations.