Transcription of Lecture Notes for Analog Electronics
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Lecture Notes for Analog Electronics
Lecture Notes for Analog Electronics Raymond E. Frey Physics Department University of Oregon Eugene, OR 97403, USA. December, 1999. Class Notes 1. 1 Basic Principles In electromagnetism, voltage is a unit of either electrical potential or EMF. In Electronics , including the text, the term voltage refers to the physical quantity of either potential or EMF. Note that we will use SI units, as does the text. As usual, the sign convention for current I = dq/dt is that I is positive in the direction which positive electrical charge moves. We will begin by considering DC ( constant in time) voltages and currents to introduce Ohm's Law and Kirchoff's Laws.
1 and R 2, connected in parallel have voltage drop V = IRp,where Rp=[(1=R 1)+(1=R 2)] −1 This generalizes for n parallel resistors to 1=Rp = Xn i=1 1=Ri 1.2.3 Voltage Divider The circuit of Fig. 3 is called a voltage divider. It is one of the most useful and important circuit elements we will encounter. The relationship between V in = Vac and ...
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