# exp04_add - Agenda and Notes Today during class 9:30 a.m...

This preview shows pages 1–8. Sign up to view the full content.

Agenda and Notes Today, during class! 9:30 a.m. Boeing Space and Intelligence Systems (Matt and Matt) 4 extra credit assignments available at the bottom of http://hibp.ecse.rpi.edu/~connor/educati Friday, Oct. 3 (EMPAC!), Open shop 2:00-5:00 p.m

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Electronic Instrumentation Experiment 4 (continued) Part A. Op Amp Basics Review Part B. Adder and Differential Op Amp Part C. Op Amp Limitations
What is an op amp? An inexpensive, versatile, integrated circuit that is another basic building block to electronics (made of resistors and transistors) Amplifier that has Large open loop gain (intrinsic) Differential input stage, inverting input (-) and non-inverting input (+) One output Uses components in the feedback network to control the relationship between the input and output

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
What does an Op-Amp do? Performs “operations” on an input signal Amplification Buffering Integration/Differentiation Addition/Subtraction
Open Loop/Closed Loop and Feedback Open loop Very high gain (intrinsic gain) Poor stability Open loop gain assumed to be infinite for ideal op amps Closed loop Uses feedback to add stability Reduces gain of the amplifier Output is applied back into the inverting (-) input Most amplifiers are used in this configuration Open loop gain Feedback Σ Vin Vout - +

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Golden Rules of Op-Amp Analysis Rule 1: V A = V B The output attempts to do whatever is necessary to make the voltage difference between the inputs zero. The op-amp “looks” at its input terminals and swings its output terminal around so that the external feedback network brings the input differential to zero. Rule 2: I A = I B = 0 The inputs draw no current The inputs are connected to what is essentially an open circuit
1) Remove the op-amp from the circuit and draw two circuits (one for the + and one for the – input terminals of the op amp).

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern