homework 1 - bme 302 2009

homework 1 - bme 302 2009 - Homework 1 BME 302L Spring 2009...

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Homework 1: BME 302L, Spring 2009 Due: Tuesday February 3 Preview accepted Tuesday January 27 Exercise 1 (10 points): For the model of bioelectrode on the right, which of the following values approximates the critical frequency of the electrode impedance (in Hz)? 1. 60 2. 531 3. 3300 4. 10,000 5. 10,200 10 k 200 30 nF 0.7 V Exercise 2 (10 points): What is the value of current I for the circuit on the right (in mA)? 1. 0.00 2. 0.80 3. 1.00 4. 1.21 5. 1.82 12 V 3.3 K 5 K 1 K 6 V I Note: The previous two exercises show how multiple-choice questions will be presented on the exams Exercise 3 (10 points): For the circuit below, determine the diode current and the powers dissipated in the diode and the two resistors. Use the practical diode model. 2 K 1.2 K 6 V 1.5 V Exercise 4 (10 points): Problem 17, pp. 41 of Floyd. If the diode is forward-biased, also determine the diode current and the power dissipated by the diode. Exercise 5 (20 points): Problem 20, pp. 41 of Floyd. Assume that each diode you found to be faulty is replaced with a diode that operates properly. Determine the reading of the voltmeter in the latter
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