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10k 1k V out V 1 V 2 Challenge: Make a circuit that produces an - PowerPoint PPT Presentation

Jan 20, 2024 •329 likes •473 views

What is the output voltage in terms of the inputs? 10k 1k V out V 1 V 2 Challenge: Make a circuit that produces an output that is only dependent on the di ff erence, (V 1 -V 2 ). Di ff erential ampli fi er With correct choices for R 3 and R 4

  1. What is the output voltage in terms of the inputs? 10k Ω 1k Ω V out V 1 V 2 Challenge: Make a circuit that produces an output that is only dependent on the di ff erence, (V 1 -V 2 ).

  2. Di ff erential ampli fi er With correct choices for R 3 and R 4 , we can make this amplify the di ff erence between V 1 and V 2 . R 2 R 1 R 3 V out V 1 V 2 R 4

  3. ENGR 40M, Lecture 20: Building an ECG Steven Bell 11 August 2017

  4. Logistics Homework due next Monday at class time Extra help on Sunday, 2-4pm, STLC 115 Lab times next week have changed Final exam: next Friday, 3:30-6:30, in 200-002

  5. By the end of today, you should be able to: Describe the main components of our ECG Explain what an instrumentation amplifer is, and why it's not an op-amp.

  6. To body From body (Aorta) (Superior vena cava) To lungs (Pulmonary artery) From lungs (Pulmonary vein) Left Atrium Right Atrium Left Ventricle Right Ventricle From body (Inferior vena cava)

  7. understandingekg.com

  8. "A noob's guide to ECG" - Slideshare

  9. 12-lead ECG ecglibrary.com

  10. You're trying to build an ECG. What capabilities does your circuit need? What does it need to be able to do (and not do) to work?

  11. value = analogRead(PIN) PIN must be an analong-capable input (A0-A5) Result is a 10-bit number, representing 0-5V

  12. Di ff erential ampli fi er, again How much current fl ows through V 1 and V 2 ? R 2 R 1 R 3 V out V 1 V 2 R 4

  13. Arduino isolation circuit

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