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Questions and Answers
What is the purpose of a voltage follower?
To have a gain of 1 and output voltage that follows the input voltage.
What are the main characteristics of an instrumentation amplifier?
High input impedance, high CMRR, and high gain.
What is the function of a pacemaker?
To produce periodic electric pulses to stimulate the heart.
What is one benefit of using an instrumentation amplifier?
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How many channels are there in the TI ADS1298 ECG circuit?
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What is the half-cell potential of the Ag/AgCl electrode used in the laboratory study?
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When measuring the dc voltage between the test electrode and the Ag/AgCl electrode, what voltage is observed with the test electrode being negative?
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What is the circuit model for the electrode based on the impedance measurements at very low currents?
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What does the equation 𝑰 = 𝟏𝟎𝟎𝒆−𝒕Τ𝟏𝟎 represent in the context of the AgCl layer growth on the Ag electrode?
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If the reaction runs for a long period so the current at the end is essentially zero, how much charge is removed from the battery?
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How many grams of AgCl are deposited on the Ag electrode's surface during the reaction?
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What solution is the chloride electrode placed into for the subsequent experiment mentioned?
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What current density was used to deposit the AgCl layer to achieve the lowest electrode-electrolyte impedance?
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At what current density was the AgCl layer deposited with a current density of 5 mA/cm2?
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What is the significance of measuring impedance at very low currents in electrode studies?
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