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Linear

In common usage, linearity refers to a mathematical relationship or function that can be graphically represented as a straight line, as in two quantities that are directly proportional to each other, such as voltage and current in a simple DC circuit, or the mass and weight of an object. A crude but simple example of this concept can be observed in the volume control of an audio amplifier. While our ears may (roughly) perceive a relatively even gradation of volume as the control goes from 1 to 10, the electrical power consumed in the speaker is rising geometrically with each numerical increment. The "loudness" is proportional to the volume number (a linear relationship), while the wattage is doubling with every unit increase (a non-linear, exponential relationship). In electronics, the linear operating region of a device, for example a transistor, is where a dependent variable (such as the transistor collector current) is directly proportional to an independent variable (such as the base current). This ensures that an analog output is an accurate representation of an input, typically with higher amplitude (amplified). A typical example of linear equipment is a high fidelity audio amplifier, which must amplify a signal without changing its waveform. Others are linear filters, linear regulators, and linear amplifiers in general. In most scientific and technological, as distinct from mathematical, applications, something may be described as linear if the characteristic is approximately but not exactly a straight line; and linearity may be valid only within a certain operating region—for example, a high-fidelity amplifier may distort even a small signal, but sufficiently little to be acceptable (acceptable but imperfect linearity); and may distort very badly if the input exceeds a certain value, taking it away from the approximately linear part of the transfer function.

Linear > Amplifiers and Comparators > Special Purpose Amplifiers

型号	DS	厂牌	批号	数量	地区	采购
AD22057R		ADI	-	5556	香港	要求报价
AD22057R		ADI	200539+	349	中国	要求报价
AD22057R		ADI	2021+	349	中国	要求报价
AD22057R		ADI	2020+	2299	中国	要求报价
AD22057R		ADI	2006+	687	香港	要求报价
AD22057R		ADI	2019+	4142	新加坡	要求报价
AD22057R		ADI	2021+	5000	韩国	要求报价
AD22057R		ADI	199951+	153	中国	要求报价
AD22057R		ADI	-	1500	中国	要求报价
AD22057R-REEL		ADI	201817+	15145	新加坡	要求报价
AD22057RZ		ADI	-	2000	香港	要求报价
AD22057RZ		ADI	2021+	191	中国	要求报价
AD22057RZ		ADI	2003+	2010	日本	要求报价
AD22057RZ		ADI	2023+	25000	中国	要求报价
AD22057RZ		ADI	2020+	6800	中国	要求报价
AD22057RZ		ADI	-	5617	中国	要求报价
AD22057RZ		ADI	2021+	5000	韩国	要求报价
AD22057RZ		ADI	2011+	967	香港	要求报价
AD22057RZ		ADI	2021+	1000	中国	要求报价
AD22057RZ		ADI	2023+	8620	中国	要求报价
AD22057RZ		ADI	-	900	香港	要求报价
AD22057RZ-REEL		ADI	201608+	2214	中国	要求报价
AD22057RZ-REEL		ADI	201608+	2214	中国	要求报价
AD22057RZ-REEL		ADI	201608+	2189	中国	要求报价
AD22057RZ-REEL		ADI	2016+	2189	新加坡	要求报价

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