Example_exam1

Example_exam1 - resistors, so that for a voltage drop of 10...

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1 Mid-term (Electronics and Instrumentation–CHM6158C), Mar. 2, 2010 Name :_______________________________________ UFID :_____________________ Instructions: Show relevant equations and units. Total points: 30. For oscilloscope measurement (question 1), will take turns on who can take readings. Each of you get 6 minutes. Two people at a time. 1) Oscilloscope measurement. Obtain the signal from the arbitrary waveform generator. What type of a waveform is it? What is the amplitude and frequency? (3 pts) Waveform: Amplitude: Frequency: 2) For this circuit of resistors, R1 – R5 (all 10 ), what total current flows through the circuit for a voltage drop of 10 V at the power supply? (5 pts)

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2 3) How could you change the circuit above (using all 5 resistors), so that the total dissipative power (in the resistors) is reduced by roughly a factor of 2? In other words, how would you assemble the 5

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Unformatted text preview: resistors, so that for a voltage drop of 10 V, the resistive heating is reduced by a factor of 2 relative to the circuit in Q 2? (3 pts) 4) Use 8-bit binary code to add up 233 and -32. (4 pts) 3 5) For the ttl circuit shown below, if inputs A and B are HIGH, which way does the current flow from V ∞ to ground? Rationalize what happens at the transistors Q1-Q5. What does this mean for the output? What is the output side called on the transistor? What happens if B is changed to LOW. (7 pts) 4 6) The signal below is a voltage signal (mV) as a function of time (ms). If you wanted to filter out the noise, draw the electrical circuit that you would use, and indicate the values ( Ω and F) that would be useful. (8 pts)...
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This note was uploaded on 07/30/2011 for the course CHM 6158 taught by Professor Polfer during the Spring '11 term at University of Florida.

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Example_exam1 - resistors, so that for a voltage drop of 10...

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