SchochLab6PreLab

pdf

School

University of California, San Diego *

*We aren’t endorsed by this school

Course

152

Subject

Electrical Engineering

Date

Dec 6, 2023

Type

pdf

Pages

Uploaded by BarristerPuppyMaster248

Lorelai Schoch A50 Lab 6: Electrocardiogram 1. Read the lab procedure. 2. What overall gain do you want? A first approximation for real ECG signals is 1 mV peak to peak. Give a range of useful total gain/amplification. 2-1000 3. What is the mid-band amplification provided by the LM741 op amp circuit in Figure 1. Resistor R6 has not been given a value, so your answer will be a function of R6. What should R6 be for a gain of 30 V/V? [Note: we may have to substitute R’s and C’s for the circuit actually built in lab.] 1+150k/R6 R6 should be 5k to get a gain round 30 (5172.41 Ohms) 4. If the 741 circuit has a gain of 30 what should be Rgain for the AD 622? 30 5. Which part of the circuit does high pass filtering (eliminating DC)? What part of the circuit does low pass filtering (eliminating very high frequencies)? What are the RC time constants associated with these filters and what low- and high-pass cutoff frequencies of the LM741 op amp circuit in the ECG? High pass R4 C5 (2.2s 0.07) Low Pass R2 C2 (2.2μs 72kHz), R1 C1 (2.2μs 72kHz), R3 C4 (1.5ms 100Hz) 6. If v1 of the biopotential amplifier is connected to an electrode on the right arm and v2 is connected to an electrode on the left arm, what Lead configuration does your ECG measure and display? You’ll have to look to either lecture notes or the web or Webster for answers. Eisenhower configuration 7. Find a picture of a typical voltage waveform from this Lead and copy it into your prelab. Label significant features of the waveform. What cardiac event does each feature represent?

Atria Depolarize, pause at AV node, septal depolarization, ventricular depolarization, ventricular repolarization, heart is polarized. 8. Access Physionet https://www.physionet.org/ and spend 10 minutes looking through the website, especially at the link to the Data Viewer https://archive.physionet.org/cgi-bin/atm/ATM. Examine the choices of signals (Input Data Base). You should see plots for the signals. Choose one of the signals to use in the laboratory. One of the tools is “Export signals as .mat”. You should choose this and then download the binary file. We suggest choosing a 1 minute recording and a 10 second recording. Use Matlab to read the signal and to save it as a file that can be output using the commands from Lab 2. [Footnote: this is an exceptionally widely used data base and the other formats are much more widely used, with the result that there are many resources available to you world-wide for analyzing ECG and other physiological signals.] Report what signal you chose to download. Cerebral Vasoregulation in Elderly with Stroke (cves)

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Related Documents

Ohm's Law_Madison_Boughton.docx

EE3114 Hwk 1 Part 1 pn Junctions and Diodes Rev D SOLUTIONS (1).PDF

Lab 03 PH110-2.pdf

REVISED Study Plan - FOID 1006EL 12 - An Introduction to Scientific Inquiry and Crime Scene Investig

Lab 4-Population dynamics.pdf

Lab 2- Nodal Analysis.pdf

PHYS_2&12_Lab 4_Lab Sheets.docx

Recommended textbooks for you

Power System Analysis and Design (MindTap Course ...

Electrical Engineering

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:Cengage Learning

Delmar's Standard Textbook Of Electricity

Electrical Engineering

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Cengage Learning

EBK ELECTRICAL WIRING RESIDENTIAL

Electrical Engineering

ISBN:9781337516549

Author:Simmons

Publisher:CENGAGE LEARNING - CONSIGNMENT

Electricity for Refrigeration, Heating, and Air C...

Mechanical Engineering

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Cengage Learning

Electric Motor Control

Electrical Engineering

ISBN:9781133702818

Author:Herman

Publisher:CENGAGE L

SEE MORE TEXTBOOKS

Recommended textbooks for you

Power System Analysis and Design (MindTap Course ...
Electrical Engineering
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:Cengage Learning
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
EBK ELECTRICAL WIRING RESIDENTIAL
Electrical Engineering
ISBN:9781337516549
Author:Simmons
Publisher:CENGAGE LEARNING - CONSIGNMENT
Electricity for Refrigeration, Heating, and Air C...
Mechanical Engineering
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Cengage Learning
Electric Motor Control
Electrical Engineering
ISBN:9781133702818
Author:Herman
Publisher:CENGAGE L