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For the circuit in Fig. 12.40(b), let V, V, I = 20 A, and

Microelectronic Circuits | 6th Edition | ISBN: 9780195323030 | Authors: Adel S. Sedra ISBN: 9780195323030 147

Solution for problem 12.67 Chapter 12

Microelectronic Circuits | 6th Edition

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Microelectronic Circuits | 6th Edition | ISBN: 9780195323030 | Authors: Adel S. Sedra

Microelectronic Circuits | 6th Edition

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Problem 12.67

For the circuit in Fig. 12.40(b), let V, V, I = 20 A, and . Find the input common-mode range and the differential voltage gain . Neglect base currents.

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Lecture 4  What is a Year o Tropical or Solar Year ­ Time difference between spring equinox ­ 365.242 o Sidereal Year ­ Orbit Sun once with respect to distant starts ­ 365.256 days o Timing of equinox in the orbit is changing  One view of Water: o A series of inputs and outputs, climatic and human  Inputs:  Precipitation (22% over land, snow, and rainfall)  Infiltration (water that makes it through the soil)  Percolation (water from soil to rock and subsurface runoff ­ overland flow, streams) o Outputs:  Evaporation (Loss of water from surface)  Transpiration (Water loss from plants)  Evapotranspiration includes both terms  ~14% of global evapotranspiration is over land  Potential Evaporation (PET or POTET): o The amount of water that would evaporate under optimum conditions o If there was water, how much would evapotranspire o Actual Evapotranspiration (AET or ACTET) ­ Determined by subtracting a “deficit” (DEFIC) from the POTET  Storage: o Moisture exists in soil in three forms o Hygroscopic Water is a molecular layer attached to soil particles and is not available for use o Capillary Water is held within the soil and IS AVAILABLE for withdrawal from the savings account o Gravitational Water is big surplus; it saturates the soil and recharges groundwater  The Natural Balance ­ Evapotranspiration = Transpiration + Evaporation  Balance ­ Utilization is withdrawal, recharge is a deposit  Groundwater:  Lies beneath the Earth’s surface between 0 and 13,00 feet depth  Usable groundwater is “stored” (found) in aquifers  Aquifers: o Zone of aeration is the area just beneath the surface ­ air pockets allow water to move through capillary action o Zone of saturation is here all the soil pore spaces contain water o Water table is the contact point between zone of aeration and zone of saturation o Permeability refers to whether or not soil/rock can permit water flow o Aquifer is a rock layer that is permeable to groundwater flows in usable amounts o Influent vs Effluent describes the interaction between the water table and surface streams  Aquifers and Human Modifications:  Groundwater pumping can change the aquifer “drawdown”  Area where the water table is lowered takes the form of a “cone of depression”  When water is pumped faster than it can be recharged, it’s called “groundwater mining”  Aquifers can collapse when they lose the support of water ­ this creates a problem with subsidence  Aquifer Examples:  Ogallala Aquifer: o Largest known aquifer in the world 174,000 mi cubed BILLIONS of dollars in agriculture activity o Retreating glaciers from Ice Ages charged it up for several hundred thousand years o In the past 100 years, we’ve dropped the water table about 100ft  Drought:  A physical and social construct  Meteorological Drought ­ Dry conditions of low and precipitation and high temperature  Agricultural Drought ­ Soil­moisture and weather affect crop production  Hydrologic Drought ­ Water supply (streams, reservoirs, groundwater) drops  Socioeconomic Drought ­ Comprehensive measure...not enough water to meet demand of plants, animals, and humans

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Chapter 12, Problem 12.67 is Solved
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Textbook: Microelectronic Circuits
Edition: 6
Author: Adel S. Sedra
ISBN: 9780195323030

This full solution covers the following key subjects: base, Circuit, common, currents, Differential. This expansive textbook survival guide covers 15 chapters, and 1344 solutions. The answer to “For the circuit in Fig. 12.40(b), let V, V, I = 20 A, and . Find the input common-mode range and the differential voltage gain . Neglect base currents.” is broken down into a number of easy to follow steps, and 29 words. This textbook survival guide was created for the textbook: Microelectronic Circuits, edition: 6. Microelectronic Circuits was written by and is associated to the ISBN: 9780195323030. Since the solution to 12.67 from 12 chapter was answered, more than 245 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 12.67 from chapter: 12 was answered by , our top Engineering and Tech solution expert on 11/15/17, 04:00PM.

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For the circuit in Fig. 12.40(b), let V, V, I = 20 A, and