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lesson16

# lesson16 - Lesson 16 Op-Amps#1(Sections 4-3 and 4-4(CLO 4-2...

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Lesson 16 – Op-Amps #1 (Sections 4-3 and 4-4) (CLO 4-2) There are seven lessons dedicated to Op-Amps. By the end of this module the students should feel comfortable analyzing and designing Op-Amp circuits. The lessons are as follows: 1. The basics (this lesson). 2. The fundamental building blocks (inverter, non-inverter, summer, difference amp). 3. Cascading Op-Amps and loading issues. 4. Op-Amp Design and Evaluation considerations. 5. Op-Amp Applications including Comparators. 6. Instrumentation System Design – Active Transducers. 7. Instrumentation System Design – Passive Transducers. A good way to begin is with an introduction of why an Op-Amp is called an Op-Amp (it can perform mathematical operations like addition, subtraction, scalar multiplication, integration and differentiation). It was developed by John Ragazzini of the National Defense Research Council during WWII to perform mathematical operations needed for the radar systems being developed. The key to the Op-Amp’s success was the use of feedback – the R F studied in previous lessons. Point out that we use dependent sources to help model the operation of the Op-Amp – a non-linear device – but in its linear region. A show-and-tell here is useful. Show off a uA741 Op-Amp so that students can see the scale of the device we are describing. The actual device has dozens of components inside but fortunately, it can be simply modeled.

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