Address 4: Operational Intensifiers.


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Address 4: Operational Enhancers What would you be able to do with boundless addition? Some History Fairchild 0.60 Inches 1964: The Main Direct IC The µA702 Operation Amp 12 Transistors Creator: Weave Widlar 1965: A Smash hit The µA709 Operation Amp 14 Transistors Fashioner: Sway Widlar
Transcripts
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Address 4: Operational Amplifiers What would you be able to do with unending increase? Prologue to Engineering Electronics STOLEN FROM K. A. Connor

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Some History Fairchild 0.60 Inches 1964: The First Linear IC The µA702 Op-Amp 12 Transistors Designer: Bob Widlar 1965: A Best-Seller The µA709 Op-Amp 14 Transistors Designer: Bob Widlar Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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2 Minute Quiz Name_______ Section________ Date_________ What is the voltage measured by the blue test? Prologue to Engineering Electronics STOLEN FROM K. A. Connor

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What would you be able to do with unbounded increase? The objective of enhancer architects: immense addition. What are the issues and opportunities connected with unending increase? To start with, we require a model. Prologue to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amp Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Ideal Op-Amp Model Gain is interminable Input resistance is vast Output resistance is zero Input voltage is zero Input current is zero Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Ideal Op-Amp Continued Bandwidth is likewise limitless. Subsequently, a perfect operation amp lives up to expectations the same at all frequencies. Prologue to Engineering Electronics STOLEN FROM K. A. Connor

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Feedback Like most built frameworks, the operation amp utilizes criticism to understand its potential quality. Criticism comes in two structures Positive Feedback Negative Feedback It appears like positive input may be best, however negative input makes the operation amp work Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Feedback Examples From a Zoology Course You just ate a Krispy Kreme doughnut and your blood glucose levels are on the ascent. In light of this ascent, the pancreas is discharging insulin into the circulatory system empowering stockpiling of glucose. Thus, blood glucose levels start to drop. Is this an illustration of positive or negative criticism? A lady is in the process of giving birth, weight receptors in the conception trench send messages to her mind that outcome in expanded withdrawal of the uterus and expanded weight in the conception waterway. Is this positive or negative input? Prologue to Engineering Electronics STOLEN FROM K. A. Connor

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Feedback: Valve Example As the water nears the predefined level, the valve is shut. Negative input is most normally used to control frameworks. Prologue to Engineering Electronics STOLEN FROM K. A. Connor

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Golden Rules for Op-Amps The yield endeavors to do whatever is important to have the voltage effect between the two inputs zero. (Negative Feedback is Required) The inputs draw no current. Prologue to Engineering Electronics STOLEN FROM K. A. Connor

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Positive and Negative Feedback Connecting the yield to the positive info is sure criticism Connecting the yield to the negative information is negative input Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amp Configurations Buffer or Voltage Follower No voltage distinction between the yield and the info Draws no present, so it puts no heap on the source Used to disengage sources from burdens Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amp Configurations V 2 Non-Inverting Amplifier No voltage distinction between inputs Resistors act like voltage divider Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amp Configurations Non-Inverting Amplifier Continued Combining the two mathematical statements for the voltages gives us the relationship in the middle of information and yield Note that this equation utilizes distinctive variables as a part of the lab review Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amp Configurations V 2 Inverting Op-Amp Current through R 1 breaks even with the current through R f No present in the inputs The voltage at both inputs is zero Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amp Configurations Inverting Op-Amp Continued Current through R 1 Current through R f Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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2 Minute Quiz Name______ Section_______ Date________ What is the voltage measured by the green test? Prologue to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amp Configurations Why the less sign for the current through R f ? The tradition for Ohm’s Law is that the present streams from the high voltage to the low voltage for a resistor Here the present streams from the low voltage (ground) to the high voltage (V O ) Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amp Configurations Inverting Op-Amp Continued The current through R 1 must equivalent the current through R 2 since there is no present in the inputs. Consolidating the two mathematical statements for the streams Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amp Configurations Inverting Summing Amplifier Each information resistor adds to the current. Prologue to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amps: Practical Issues Op-Amps oblige power 741 requires in addition to and short 15V Others may require just positive or both positive and negative voltages Output voltage is constrained to Usually channel capacitors are associated with energy to diminish clamor Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amps: Practical Issues We utilize genuine operation amps: 741 Note the pin associations for the IC Note: Literally a Black Box Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Op-Amps: Practical Issues Note the pins (not all are utilized) Extra resistor adjusts counterbalance issue Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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ICs come in numerous sorts of bundles. We will utilize the 8-pin, double in-line or DIP bundle Note the other balance nulling circuit Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Where Will You See This Information Next? Operation amps: Many Courses Including ECSE-2010 Electric Circuits ECSE-2050 Analog Electronics Feedback and Control ENGR-2350 Embedded Control ECSE-4440 Control Systems Engineering ECSE-496x Control Systems Design Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Embedded Control Studio Classroom Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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http://litec.rpi.edu Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Feedback and Control Example The modified pendulum is similar to adjusting a homerun stick Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Inverted Pendulum Experiment http://www.univ-valenciennes.fr/LAMIH/pendule/english/index.html Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Magnetic Levitation Trains can attractively fly over a roadbed with position maintained by some sort of control framework Our next lab is on maglev Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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More Magnetic Levitation Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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2 Minute Quiz Name_______ Section________ Date__________ What is the voltage measured by the red test? Prologue to Engineering Electronics STOLEN FROM K. A. Connor

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Answers The green test: 10V The red test: 1V The blue test: 0V Voltage Divider: Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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Engineering Ethics Electrical and Computer Engineers don\'t typically confront quick moral issues including general wellbeing and security System control is one of numerous special cases From the IEEE Code of Ethics We consent to acknowledge obligation in settling on building choices steady with the wellbeing, wellbeing and welfare of people in general, and to uncover instantly calculates that may jeopardize the general population or nature; http://www.iit.edu/divisions/csep/eac/post_workshop.html Introduction to Engineering Electronics STOLEN FROM K. A. Connor

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