ECE 231 HW-3 Solution Set

# ECE 231 HW-3 Solution Set - ECE-231 Circuits and Systems I...

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ECE-231 Circuits and Systems I Spring ’11 HW Set #3 Solution Set Professor Stewart Personick ECEC-321 [email protected]

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Instructions Send your solution set, via E-mail, to: [email protected] The “subject ” of your E-mail must be : ECE 231 HW#3 (your last name) Your solution set must be in the form of an attachment. I.e. a Microsoft Office file (.doc, .docx, .xls, .xlsx, .ppt, .pptx) or a legible scan of a handwritten file. Your solution set must be sent to me by
Problem #1 0 1 2 3 4 5 6 + - Y Ohm resistor Note: The resistance of the coil (electromagnet) inside this ammeter is : 1000 Ohms DC Ammeter: 0-6 mA We want to use the ammeter, shown below, to construct a voltmeter that can measure voltages between 0 Volts and 60 Volts. What value to we need to use for Y? If 60 Volts, applied between the + and – terminals produces a full scale reading, then: 60V/(Y Ohms + 1000 Ohms) = 6mA (Y + 1000) Ohms = 60V / .006A = 10,000 Ohms Y= 9000

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Problem #2 + - 1.5 Volts
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## This note was uploaded on 03/26/2012 for the course ECE 231 taught by Professor Pietrucha during the Spring '08 term at NJIT.

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ECE 231 HW-3 Solution Set - ECE-231 Circuits and Systems I...

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