Ebook Electronic devices and circuit theory (7th edition): Part 2
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Ebook Electronic devices and circuit theory (7th edition): Part 2
Ebook Electronic devices and circuit theory (7th edition): Part 2
CHAPTERBJT and JFET Frequency Response11.1INTRODUCTIONThe analysis thus far has been limited to a particular frequency. For the amplifier. It was a fr Ebook Electronic devices and circuit theory (7th edition): Part 2requency that normally permitted Ignoring the effects of the capacitive elements. reducing the analysis to one that included only resistive elements and sources of the independent and controlled variety. We will now investigate the frequency effects introduced by the larger capacitive elements of th Ebook Electronic devices and circuit theory (7th edition): Part 2e network at low frequencies and the smaller capacitive elements of the active device at the high frequencies. Since the analysis will extend throughEbook Electronic devices and circuit theory (7th edition): Part 2
a wide frequency range, the logarithmic scale will be denned and used throughout the analysis. In addition, since industry typically uses a decibel scCHAPTERBJT and JFET Frequency Response11.1INTRODUCTIONThe analysis thus far has been limited to a particular frequency. For the amplifier. It was a fr Ebook Electronic devices and circuit theory (7th edition): Part 2BJTs and FETs pennit a coverage of each in the same chapter.11.2LOGARITHMSThere IS no escaping the need to become comfortable with the logarithmic function. The plotting of a variable between wide limits, comparing levels without unwieldy numbers, and identifying levels of particular importance in t Ebook Electronic devices and circuit theory (7th edition): Part 2he design, review, and analysis procedures are all positive features of using the logarithmic function.As a first step in clarifying the relationshipEbook Electronic devices and circuit theory (7th edition): Part 2
between the variables of a logarithmic function, consider the following mathematical equations:a = b\ X = logi a-11.1The variables a. b. and r are theCHAPTERBJT and JFET Frequency Response11.1INTRODUCTIONThe analysis thus far has been limited to a particular frequency. For the amplifier. It was a fr Ebook Electronic devices and circuit theory (7th edition): Part 2nstance, if b = 10 and X = 2.buta = bx = (10)2 = 100X = logi a = loglo 100 = 2In other words, if you were asked to find the power of a number that would result in a particular level such as shown below:10.000 = 10’493the level of X could be determined using logarithms. That is.X = log10 10.000 = 4Fo Ebook Electronic devices and circuit theory (7th edition): Part 2r the electrical electronics industry and in fact for the vast majority of scientific research. the base in the logarithmic equation is limited to 10Ebook Electronic devices and circuit theory (7th edition): Part 2
and the number e = 2.71828.. . .Logarithms taken to the base 10 are referred to as common logarithms, while logarithms taken to the base e aie referreCHAPTERBJT and JFET Frequency Response11.1INTRODUCTIONThe analysis thus far has been limited to a particular frequency. For the amplifier. It was a fr Ebook Electronic devices and circuit theory (7th edition): Part 2a-11.4On today's scientific calculators, the common logarithm IS typically denoted by the UsJ key and the namral logarithm by the |lnj key.EXAMPLE 1Ỉ.ỈUsing the calculator, determine the logarithm of the following numbers to the base indicated.(a)loglo IO*5.(b)log/z(c)log10 10(d)log, e ’.Solution(a) Ebook Electronic devices and circuit theory (7th edition): Part 26(b) 3(c)-2(d)-iThe results hl Example 11.1 clearly reveal that the logarithm of a number taken to a power is simply the power of the number if the nuEbook Electronic devices and circuit theory (7th edition): Part 2
mber matches the base of the logarithm. In the next example, the base and the variable V are not related by an integer power of the base.EXAMPLE 11.2UCHAPTERBJT and JFET Frequency Response11.1INTRODUCTIONThe analysis thus far has been limited to a particular frequency. For the amplifier. It was a frCHAPTERBJT and JFET Frequency Response11.1INTRODUCTIONThe analysis thus far has been limited to a particular frequency. For the amplifier. It was a frGọi ngay
Chat zalo
Facebook