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488 Method For Fabricating Thin Film Structures With Negative
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... been introduced, actual devices have been fabricated and tested. Copper and aluminum were used for this experiment, however this method should not be limited to copper and aluminum only, other materials can also be used. The applications of this invention is very broad, however we can already see a ...
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basics of electronics lab manual i, ii semester
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... outputs, Y and Y (or Z and Z), which are equal in amplitude, but opposite in polarity. This increases the versatility of the device. By proper choice of external connections, linear amplification, and linear attenuation, and many different applications requiring logarithmic signal processing are pos ...
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Negative feedback



Negative feedback occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances.Whereas positive feedback tends to lead to instability via exponential growth, oscillation or chaotic behavior, negative feedback generally promotes stability. Negative feedback tends to promote a settling to equilibrium, and reduces the effects of perturbations. Negative feedback loops in which just the right amount of correction is applied with optimum timing can be very stable, accurate, and responsive.Negative feedback is widely used in mechanical and electronic engineering, but it also occurs naturally within living organisms, and can be seen in many other fields from chemistry and economics to physical systems such as the climate. General negative feedback systems are studied in control systems engineering.
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