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CHAPTER 1:  INTRODUCTION
CHAPTER 1: INTRODUCTION

... ability of a design to meet this objective is quantified in the noise factor of the amplifier which is defined as the ratio of the signal-to-noise ratio at the output of the amplifier to the signal-to-noise ratio at the input. It is well known that the first amplification stage dominates the total n ...
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V - Physics | Oregon State University

... How many T0 periods elapse in the damping time? This number (times π) is the Quality factor or Q of the system. ...


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... relative permeability resulting in higher insertion loss Gold-Hard material and an excellent conductor, but expensive Silver-Excellent conductor, less expensive than gold, better permeability than nickel, but softer, and tarnishes Stainless Steel-Rugged material for small connectors such as SMA, but ...


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e1400D - hifi-pictures.net

... which are acceptable and commonly used for filtering between mids and tweeters. Filtering between subwoofer systems and satellite speaker systems is best done with active filters, which cut off frequency content at the input to the amplifier. Active filters are more stable than passive filters and d ...
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... condition for the same amount of data transmission and the LD driving current. The interwoven inductor can reduce the circuit area by 26%. Parasitic capacitance in interwoven inductor is discussed. Simulation results reveal that line-to-line capacitance is a significant factor on bandwidth degradati ...
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... The MAX917–MAX920 nanopower comparators in space-saving SOT23 packages feature Beyond-theRails™ inputs and are guaranteed to operate down to +1.8V. The MAX917/MAX918 feature an on-board 1.245V ±1.5% reference and draw an ultra-low supply current of only 750nA, while the MAX919/MAX920 (without refere ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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