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UCLA ELECTRICAL ENGINEERING DEPARTMENT: EE 10: CIRCUIT ANALYSIS 1 LECTURE 1 LECTURE NOTES ....................................................................................................................... 2 HOMEWORK DUE OCT 11, 2007 BEFORE CLASS:............... ERROR! BOOKMARK NOT DEFINED. INTRODUCTION TO ELECTRONIC CIRCUIT PRINCIPLES ........................................... 2 Electronic Circuits .................................................................................................................. 2 Engineering System Models .................................................................................................... 2 System Components................................................................................................................. 3 Circuit Models......................................................................................................................... 3 Problem Solving ...................................................................................................................... 3 CIRCUIT MODEL EXAMPLES ................................................................................................ 4 Biomedical Electronics: Electrocardiogram........................................................................... 4 Robotics Technology: Simple Motor Speed Control ............................................................... 4 IMPORTANT ASSUMPTIONS REGARDING ELECTRONIC CIRCUIT MODELS ........ 5 ELECTRONIC QUANTITIES AND UNITS ............................................................................. 5 CHARGE ....................................................................................................................................... 5 VOLTAGE ..................................................................................................................................... 6 CURRENT ..................................................................................................................................... 6 CIRCUIT ELEMENTS ................................................................................................................ 8 POLARITY .................................................................................................................................... 8 SIGN AND POLARITY CONVENTIONS............................................................................... 10 CRITICAL DEFINITION: THE PASSIVE SIGN CONVENTION ...................................... 10 POSITIVE AND NEGATIVE CHARGE FLOW .................................................................... 11 POWER........................................................................................................................................ 12 POLARITY OF POWER TRANSFER............................................................................................... 12 EXAMPLE: POWER.................................................................................................................. 14 EXAMPLE: POSITIVE AND NEGATIVE CHARGE FLOW .............................................. 14 CURRENT VOLTAGE CHARACTERISTICS....................................................................... 15 RANGE OF VALUES OF CURRENT, VOLTAGE, AND POWER..................................... 15 VOLTAGE RANGE ...................................................................................................................... 15 CURRENT RANGE....................................................................................................................... 16 POWER RANGE........................................................................................................................... 16 REVIEW ...................................................................................................................................... 17