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#### Lesson - 20

Western Michigan, ECE 380

Excerpt: ... ECE 3800 Lesson Twenty - Circuit Applications Vocabulary: Convolution Linear combinations Topics: Finding the density function for sums of random variables Uniform distributions Standard operational amplifier configurations summers inverters Example: See the Convolution Example posted in the Lecture Notes. This example should be completed for independent study. Practice Example: See the Convolution Example Solution in the lecture notes. ...

• 2 Pages

#### ecet231009n

SPSU, ECET 2310

Excerpt: ... Operational Amplifier s (Section 10.1) ECET 2310 Lecture Nine Operational Amplifier s (Section 10.1) Operational Amplifier s (Section 10.1) Operational Amplifier s (Section 10.1) Differential Amplifier (Section 10.2) 1 DC Bias of Diff Amp Example 1 Single-Ended Voltage Gain Differential Voltage Gain Common-Mode Voltage Gain Constant Current Source 2 ...

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#### S06Lab6

University of Iowa, BME 080

Excerpt: ... 051:080 Bioelectrical Design Spring 2006 Laboratory 6 Basic Operational Amplifier Circuits Objective: To learn how to build and analyze the following basic operational amplifier circuits: 1. 2. 3. 4. the inverting amplifier the non-inverting amplifier the summing amplifier the difference amplifier Part list (per group): one operational amplifier four resistors (between 1 k and 10 k) Instructions: For each operational amplifier circuit: Build the circuit on your breadboard. For circuits with a single input, use a sinusoidal waveform with a DC offset (so that you can tell whether the output is inverted or not) as your input. For circuits with two inputs, let the second input be the 5 V DC from the breadboard. You get to decide which of your resistors goes where! Analyze your circuit and determine what the output waveform should be (Consult your lecture notes from Electrical Circuits or the lecture notes The operational amplifier posted on the course web site under Supplementary ...

• 18 Pages

#### EE0257_ch2

Pittsburgh, ECE 0257

Excerpt: ... Course Notes for EE 0257 Introduction to Lasers and Optical Electronics Chapter 2: Operational Amplifier s This lecture covers Chapter 2.1-2.3 1. Function and characteristics of an ideal Op-amp 2. The inverting configuration 3. The non-inverting configuration A few words about op-amp: Op-amp is one of the most popular function blocks to build sophisticate electronic system and instrumentation. Today, op-amps are available at low cost, with great varieties of characteristics for instrumentation and circuit development. Since the learning of op-amp doesn't involve the knowledge of semiconductors, it can be treated as a blackbox and easy to learn too! Symbol and Characteristics of an ideal op-amp Notes: 4. This is the first of 5 lectures to cover chapter 2 5. Study Example 2.2 Chapter 2: Operational amplifier The op-amp is designed to sense the difference between two input voltage signals. An ideal op-amp should Has infinite large input impedance (doesn't draw current) Output impedance is ZERO as ...

• 3 Pages

#### ME345_Lecture_24

Penn State, ME 345

Excerpt: ... M E 345 Spring 2008 Professor John M. Cimbala Lecture 24 03/17/2008 Today, we will: Begin to review the pdf module: Operational Amplifier s (Op-Amps) Discuss some additional items not in the pdf notes: Feedback loops and input and output impedance issues Do some example problems op-amps Given: Two voltage input signals, V1 and V2 are to be combined as follows to produce an output voltage: Vo = 4 ( 3V1 + V2 ) . To do: Design a circuit that will produce this output, using only op-amps and resistors. Assume that the only resistors you have are 20 k. Solution: ...

• 7 Pages

#### EE 435 Lab 2 Spring 2009

Iowa State, EE 435

Excerpt: ... EE435 Experiment 2: Amplifier Characterization Spring 2009 Objective: The objective of this experiment is to develop measurement methods for characterizing key properties of operational amplifier s 1 Introduction Amplifiers are one of the major components and building block used in analog and mixed-signal circuits. For printed circuit board designs, the designer usually uses discrete operational amplifier s (op amps) that have the ability to drive relatively large capacitive loads which may be a combination of parasitic capacitances from the board traces in addition to any required capacitive load. These discrete op amps are some times called "catalog op amps" and are usually harder to design than op amps that are used as components in larger on-chip systems. The design of catalog op amps is generally more challenging because of the requirement that they be useful in a wide variety of applications that may have varied performance requirements. Invariably this requirement for use in a wide variety of applicatio ...

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#### ecet231021n

SPSU, ECET 2310

Excerpt: ... Operation Amplifier Astable Multivibrator (Section 7.3) ECET 2310 Lecture Twenty-One Operation Amplifier Astable Multivibrator (Section 7.3) Square/Triangular Wave Function Generator (Section 7.5) Square/Triangular Wave Function Generator (Sectio ...

• 5 Pages

#### W06_section5

Oregon State, ECE 322

Excerpt: ... Section 5 Operational Amplifier s: Temperature Controlled Fan ECE 322 Lab Book Oregon State University Page 39 Section 5: Operational Amplifier s: Temperature Controlled Fan Section Overview Resume building your power supply in this section. Use your knowledge of operational amplifier s (OPAMPs) to construct a circuit that will control the speed of a cooling fan based on temperature. Objectives 1. Design a circuit with an operational amplifier to control fan speed based on the temperature inside the power supply case. Materials 1. Your lab kit and power supply 2. Test leads and oscilloscope probes Design Constraints Figure 13 lists the design constraints for the fan controller. Keep these in mind as you complete each section of this lab. Each criterion must be met. Safely equipped with a cooling fan that should not normally be running at 70F but should reach rated speed around 95F. Design should use an OPAMP and a BJT or MOSFET to control the fan speed. Assembled safely and with no electrical hazar ...

• 6 Pages

#### W07_section4

Oregon State, ECE 322

Excerpt: ... Section 4 Operational Amplifier s: Temperature Controlled Fan ECE 322 Lab Book Oregon State University Page 43 Section 5: Operational Amplifier s: Temperature Controlled Fan Section Overview Resume building your power supply in this section. Use your knowledge of operational amplifier s (OPAMPs) to construct a circuit that will control the speed of a cooling fan based on temperature. Objectives 1. Design a circuit with an operational amplifier to control fan speed based on the temperature inside the power supply case. Materials 1. Your lab kit and power supply 2. Test leads and oscilloscope probes Design Constraints Figure 9 lists some of the design constraints for the fan controller. The best source for these constraints is the project specification document. Keep these in mind as you complete each section of this lab. Each criterion must be met. Safely equipped with a cooling fan that should not normally be running at 70F but should reach rated speed around 95F. Design should use an OPAMP and a B ...

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#### Experiment 9

S.F. State, ENGR 206

Excerpt: ... SAN FRANCISCO STATE UNIVERSITY ELECTRICAL ENGINEERING Experiment #9 Operational Amplifier s II Objectives To experiment with operational amplifier s (op amps) connected in summing and integrating configurations. Introduction When the operational amplifier was first designed, it was used to perform mathematical operations, hence the name operational amplifier . It can perform arithmetic operations (addition, subtraction, multiplication, and division) as well as integration and differentiation. In this experiment, you will study the summing and integrating circuits. Differentiators are seldom used because they tend to amplify noise. Fig. 1 shows a summing circuit with two inputs. Note that the gain for each input can be individually set and the output is inverted. Fig. 2 shows an integrating circuit. For this experiment, you can simply ignore the resistor RF. It is there to provide a feedback path for the dc voltage; otherwise, a small dc input (a few V) could drive the op amp into saturation. Since RF is large ...

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#### Phys481_Exp4

Ill. Chicago, PHYS 481

Excerpt: ... Physics 481 Experiment 4 LAST Name (print)_ FIRST Name (print)_ OPERATIONAL AMPLIFERS 1 Experiment 4 Operational Amplifier s In this experiment we will study some of the basic uses of operational amplifier s. The main purpose of the device (as apparent form the name) is to amplify the signals, so the three most common amplifier configurations will be studied. These include the inverting, non-inverting, and differential amplifier circuits. Modern operational amplifier s are integrated circuits containing numerous components. The popular 741 op-amp, which will be used in this lab, contains 20 transistors and 11 resistors. The details of the internal design of operational amplifier s are outside of the scope for this course. Due to nearly ideal operation of modern op-amps they can be considered single circuit elements. General characteristics shared by all models of operational amplifier s include: two inputs and one output, high gain (~106), high ...

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#### 741_Layout

University of the West Indies at Mona, EE 226

Excerpt: ... HA17741 General-Purpose Operational Amplifier Pin Arrangements ...

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#### ex2s

Texas A&M, ECEN 325

Excerpt: ... OPERATIONAL AMPLIFIER S Solution Dr. Aydn . Kar layan 1 2 3 ...

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#### Computer 03

Western Michigan, ECE 552

Excerpt: ... ECE 5520 Spring 2009 Severance Project Two The purpose of this project is to design and test a threshold element as discussed in lecture. To do this, recall that the basis for a simple design is given by the following circuit. However, this only works when each of the weights is positive. Therefore, to be more general, negative resistances are required and you will recall that this requires the use of operational amplifier s too. 1. The minimal project: Design a simple three-input threshold element with positive weights using Switcher Cad. Validate your design by simulating the circuit for each input combination with at least two switching functions. 2. A much better project: Design a five-input threshold element allowing both positive and negative weights using Switcher Cad. Validate your design by implementing the last example in the lecture notes: ...

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#### Op_amps2_S05

Idaho, ME 330

Excerpt: ... Operational Amplifier s 2 OBJECTIVES (1) (2) Learn to design, build, and test an instrumentation amplifier Obtain the performance characteristics of an instrumentation amplifier through calibration and multiple regression. BACKGROUND More often than not, experimentation involves the acquisition of voltage signals. In their raw form, the voltage signals are often very small and require amplification. Engineers often employ operational amplifier s (op-amp) to process signals. Op-amps are also used to build filters, and in control systems. This week we will study the application of operational amplifier s to construct an instrumentation amplifier. We will calibrate the instrumentation amplifier and then use it in next week's lab to process signals from a strain gage circuit. PREPARATORY EXERCISE Sketch the LM358 op-amps, wires and resistors required for an instrumentation amplifier configuration. Use 100k resistor for all three feedback resistors. Set the gain of the buffer amplifiers (the non-inverting op-amps on ...

• 5 Pages

#### LEC03

Utah, PHYS 3610

Excerpt: ... 3-1 LECTURE 3: LINEAR DIFFERENTIAL OPERATIONAL AMPLIFIER S Operational Amplifier The differential operational amplifier has characteristics which, at audio frequencies or less (below about 20,000 Hz), approach those of the ideal amplifier. (Hz or "Hertz" is the proper symbol for cycles per second.) The actual device we will use in the laboratory will be the LF351, an excellent device which sells for under \$1.00. (You couldn't build an equivalent device for anywhere near the price.) We will be assuming some "ideal" characteristics; later we will study the limitations. We will use the jargon-term "op amp" to mean differential operational amplifier . The ideal characteristics we will assume will include infinite input resistance, zero output resistance and "nearly infinite" voltage gain. The symbol for an operational amplifier is: INVERTING INPUT OUTPUT NONINVERTING INPUT + Usually only these active circuit terminals are shown. It is assumed that power is supplied to other appropriate terminals (typically +15 ...

• 16 Pages

#### OperationalAmplifiers

SUNY Buffalo, MAE 334

Excerpt: ... OPERATIONAL AMPLIFIER S An amplifier is a signal conditioning device which alters an analog signal in a particular manner which can be described by the relationship: E out (t ) = h[ E in(t )] (6.43) where Eo is the output voltage, Ei is the input voltage, and h is some mathematical relationship. (a transfer function!) For many amplifiers, h = constant and the amplifier only alters the gain of the signal. Giving: Eout (t ) Avo Ein (t ) where the open loop gain of the amplifier is Avo. E o(t ) = Avo [ E i 2(t ) - E i1(t )] The Ideal Op Amp Figure 1. Equivalent circuit for an ideal operational amplifier . 1. The voltage gain is infinite: Avo = 2. The input resistance is infinite: rin = 3. The output resistance is zero: ro = 0 4. The bandwidth is infinite: BW = 5. There is zero input offset voltage: EO = 0 if Ein = 0 AXIOMS 1. The differential input voltage is zero. 2. There is no current flow into either input terminal 3. With the loop closed, the (-) input will be driven to the potential of ...

• 44 Pages

#### ECET154_topics_v2

Purdue, ECET 154

Excerpt: ... ECET-154: Analog Electronics Topics Module 3 Operational Amplifier (15 lectures + 1 test hour) a. More opamp applications b. Filters c. Differential Amplifiers d. Signal Generators and Timers: Ch. 14 e. Linear amplifier and Integrator f. Comparators g. Operational Amplifier as a device: Ch 10 Module 2 Transistor (6 lectures + 1 test hour) a. Transistor as switch b. Common emitter and Emitter Follower c. Transistor amplifiers biasing: Ch 4 & 5 d. Bipolar Junction Transistor characteristics: Ch 3 Module 1 Diode (6 lectures + 1 test hour) a. Power supply Design: Ch 15 b. Clipper and Clamping: Ch 2 c. Diode characteristics and rectification: Ch 2 ...

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#### Exam2sg350_09a

Texas A&M, ENTC 350

Excerpt: ... Exam II Study Guide - The exam will be seventy-five minutes long. This is not much time so be prepared to use your time effectively. -The exam will consist primarily of problems, but you are expected to have an understanding of the fundamentals and should be prepared to give short explanations when asked. -You should study the assigned homework carefully. Topics Operational Amplifier Basics Ideal Model Non Idealities Analysis Methods Operational Amplifier s Circuits Standard Configurations Inverting Non-Inverting Summing Buffer Current Sources Other applications Differentiators Integrators Filters Single Pole Implementations Butterworth and Chebyshev Filter Design Standard Multi-Pole Filter Designs ALSO EXPECT PROBLEMS ON DIODE APPLICATIONS (CLIPPERS, CLAMPERS, RECTIFIERS) AND ON SIMPLE DC DIODE CIRCUIT ANALYSIS SIMILAR TO PROBLEMS 6 AND 8 ON THE EXAM 1. ...

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#### Exam2sg350_08c

Texas A&M, ENTC 350

Excerpt: ... Exam II Study Guide - The exam will be seventy-five minutes long. This is not much time so be prepared to use your time effectively. -The exam will consist primarily of problems, but you are expected to have an understanding of the fundamentals and should be prepared to give short explanations when asked. -You should study the assigned homework carefully. Topics Operational Amplifier Basics Ideal Model Non Idealities Analysis Methods Operational Amplifier s Circuits Standard Configurations Inverting Non-Inverting Summing Buffer Current Sources Other applications Differentiators Integrators Filters Single Pole Implementations Butterworth and Chebyshev Filter Design Standard Multi-Pole Filter Designs Transistor Characteristics Construction of a BJT Theory of BJT Operation Uses of BJTs BJT Modes ...

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#### 431StudyQuestions-Ch3

Excerpt: ... Chem 431 Chapter 3 Study Questions (Pages to read: 59-73) What are the fundamental properties of an operational amplifier ? What is the circuit diagram for performing the following functions? o Voltage follower o Summation with inversion o Multiplication or division by a constant o Integration o Differentiation o Current-to-voltage converter Chapter-end problems: 1, 4, 5, 6, 10, 14, 15, 16, 17, 18, 19, 20 ...

• 1 Pages

#### MET382HW3_Spring2009

Purdue, MET 382

Excerpt: ... MET 382 Spring 2009, Zhang lecture Homework #3 Operational Amplifier s & Signal Conditioning 100 points, due 2/11/2009 1) Kilian's Chapter 3 Problems 2 (20 points) 2) Kilian's Chapter 3 Problem 4 (25 points) 3) Kilian's Chapter 3 Problem 6 (25 points) 4) Kilian's Chapter 3 Problem 24 (15 points) 5) Kilian's Chapter 3 Problem 26 (15 points) 1 ...

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#### Assignment4

Washington, AA 320

Excerpt: ... AA320 F08 Assignment 4. Week of October 20. Active components for amplification of sensor signals and for switching: transistors and operational amplifier s. Optional Reading: Ch 10 - bipolar transistors. Chapter 8 - Operational Amplifier s. Prelab questions: 1. NPN Transistor. Consider the following circuit with an NPN transistor, having current gain =200, and Vbe,on=0.65 V. An input voltage Vin = 1 V is applied to a 100 k resistor, RB, connected to the base, and a 5 k resistor, RL, connects collector with supply voltage Vs=15 V. a) What current Ib flows in the base? b) What current Ic flows in the collector? c) What is the collector voltage Vc? d) Suppose Vin changes by a small amount Vin. Find the change, Vc, in Vc (express Vc as a number times Vin). 2. Operational amplifier . a) Suppose an operational amplifier has an open-loop DC gain G0=107 (a typical value). The power rails are at 15 V and the amplifier output is able to swing between a minimum - Vout,min= -12 V and a maximum of Vout,max=+12 V. I ...

• 3 Pages

#### CH6sec6

Pacific, ECPE 41

Excerpt: ... Section 6-6: Operational Amplifier Circuits and Linear Algebraic Equations P6.6-1 P6.6-2 ...