Experiment7_Formal - Experiment#7 Introduction to Soldering Techniques and Biomedical Engineering Jim Tronolone ECE 2110-31 Circuit Theory Zhehan Yi 1

Experiment7_Formal - Experiment#7 Introduction to Soldering...

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Experiment #7: Introduction to Soldering Techniques and Biomedical Engineering Jim Tronolone ECE 2110-31: Circuit Theory Zhehan Yi October 27, 2015
1. Introduction The purpose of this experiment was to learn how an ECG and ECG amplifier work and then measure the waveform using a digital oscilloscope. 2. Background Information Formulas used in this experiment: V = I * R Equation 2.1 – Ohm’s Law Equation R eq = R 1 +R 2 +…+R n Equation 2.2 – Equivalent Resistance of Resistors in Series R eq = (1 + 1 +…+1 ) -1 R 1 R 2 R n Equation 2.3 – Equivalent Resistance of Resistors in Parallel Circuit Schematics: Circuit Schematic 2.1 3. Methods and Materials Equipment Components (1) Agilent DSO1024A Digital Oscilloscope (1) 180 Ohm Resistor (1) BioAmplifier Kit (1) Red LED (1) Solderless Breadboard (1) BNC to BNC cable (1) BNC to mini grabber (3) Disposable Electrodes (1) Electrode Gel Table 3.1 – Experiment #3 Equipment and Component List 4. Experimental Procedures Experiment #6 Page 2 of 5 Jim Tronolone
4.1 – Setting Up the ECG BioAmplifier Power on the amplifier Turn the “Balance” dial until the needle is centered, and set the amplification to max Set the high frequency roll-off to 50 Hz and the low frequency roll-off to 0.1 Hz Connect the lead box to the amplifier Attach electrodes to the ends of the leads, and attach the ground to the subject’s right hip, the positive to the area directly below his left pectoral, and the negative to the area directly below his right collarbone Turn on the digital oscilloscope, and connect it to the amplifier by using a BNC to BNC cable Adjust the volts/div and sec/div until a signal that resembles a PQRST wave appears on the display Record the V pk for use in Part 4.2 in Data Table 5.1

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