superposition - Iowa State University

EE 201 superposition – 2 2va + 6vb = 2V 8va 2vb = 36V Solving gives: v a = 5 V, v b = 2 V 8v a 2v b = 0 2v a + 6v b = 2V Solving gives: and 2v a + 6v b = 0 8v a 2v b = 36V A math problem: Mathematically, we can solve the simultaneous equations a piece at a

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pspice op amp - Iowa State University

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This tutorial is written with the assumption that you know how to do ... So it looks like the uA741 model has the potential to be a reasonably accurate PSPICE op amp

  Tutorials, Pspice, Pspice op amp

First-order filters - Iowa State University

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First-order filters The general form for the transfer function of a first order filter is: T(s) = G o ... Use the standard definition for cut-off frequency, which is the frequency at which the magnitude is down by from the value in the pass-band. For our low-pass function, the pass band is at low frequencies, and the ...

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Basic PMOS structure - Iowa State University

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ohmic or linear v GS < V T v DS < v GS – V T i D = K[v GS – V T]2 saturation Summary of PMOS equations K = 1 2 μCox W L VT < 0 Note the equations are identical to the NMOS equations. For a PMOS, v GS and v DS are both negative and the current flows from source to drain.

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Thevenin equivalent circuits - Iowa State University

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Jun 10, 2014 · The open-circuit voltage / short-circuit current approach can be used to calculate the Thevenin equivalent for a known circuit. Consider the circuit from slide 4: + – V S R 1 R 2 I S 9V 6 mA 1.5 k! 3 k! Open-circuit voltage – Use whatever method you prefer. We’ll use node voltage in this case. + – V S R 1 R 2 I S v a + – v oc YRF= YD ...

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npn Bipolar Junction Transistor - Iowa State University

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junction — very surprising! EE 436 BJT currents – 6 The electron current in the base is determined by the boundary ... External (terminal) currents. All currents depend on V BE in exactly the same way. Although it is a messy exponential, they …

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Diffusion of dopants in silicon - Iowa State University

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Solid-solubility limit In principle, the surface concentration that shows up in the diffusion expression could be controlled by changing the flow of a gaseous source of the dopant. (More about this later.) In practice, however, N s will be determined by the “solid solubility limit” of the dopant in the silicon. This is the thermodynamic ...

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How Millennials Can Get Rich Slowly

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How Millennials Can Get Rich Slowly William J. Bernstein ©2014 . Would you believe me if I told you that there’s an investment strategy that a seven-year-old could ... and vigor, your retirement options may well range between moving in with your kids and sleeping under a bridge in the rain.

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Rectifier circuits & DC power supplies

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Nov 01, 2015 · Rectifier circuits & DC power supplies Goal: Generate the DC voltages – needed for most electronics – starting with the AC power that comes through the power line.? 120 V RMS 9DF=( 9)sin 7 W f = 60 Hz (T = 16.67 ms) How to take time-varying voltage with an average value of 0 and turn it into a DC voltage?

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Solving circuits directly using Laplace

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Analyze the circuit in the time domain using familiar circuit analysis techniques to arrive at a differential equation for the time-domain quantity of interest (voltage or current). 2. Perform a Laplace transform on the differential equation to arrive a ... C in the RLC circuit below. The input is a step function, v i ...

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Series and parallel combinations

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EE 201 series/parallel combinations – 12 Breaking down networks using series and parallel R 3 R 4 R 5 R eq R 2 But not all circuits are simple R 1 combinations of series or parallel resistors. The initial example circuit clearly has some things that are in series and some elements that have a parallel-type connection.

  Series, Circuit, Parallel, Series and parallel

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Chapter 3: Fluid Statics - University of Iowa

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57:020 Fluid Mechanics Chapter 2 Professor Fred Stern Fall 2013 3 p n p z 2

  University, Fluid, Iowa, University of iowa

Basic PMOS structure - Iowa State University

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EE 230 PMOS – gate length (distance from source to drain) – currently as small as 20 nm. 2 Critical dimensions width: typical L to 10 L (W/L ratio is important)oxide thickness: typical 1 - …

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Iowa Cash Rent Farm Lease Short Form - Iowa State University

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Iowa Cash Rent Farm Lease (Short Form) for 20 Owner (s): Operator (s): 1. Legal Description: 2. Terms of Lease: The term of the lease shall be for a period of year (s), beginning March 1, 20 . After expiration of the initial term, the lease shall continue from year to year, unless terminated by a separate written

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