EE302 Chapter 2 - Part1

EE302 Chapter 2 - Part1 - Basic Circuit Theory Part 1...

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1 Basic Circuit Theory Part 1 Chapter 2
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2 Learning Objectives Review Resistance Ohm’s Law Short circuit and open circuit Nodes, branches and loops Kirchhoff’s Voltage Law (KVL) Kirchhoff’s Current Law (KCL)
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3 Review Passive sign convention An ideal voltage/current source ALWAYS provides the same voltage/current. An independent source provides voltage/current independent of rest of the circuit. A dependent source provides voltage/current that depends on some voltage/current on the rest of the circuit.
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4 Dependent Sources Output current or voltage is determined by other control voltages or currents Used to model gain Denoted by diamond shape + - 6 I b
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5 Practice Problems The element shown is a A. CCCS B. CCVS C. VCVS D. VCCS The element shown is a A. Independent voltage source B. Independent current source C. Resistor D. Do not know For the circuit shown, the current flowing through the dependent source is A. 3A B. Io C. Not enough information
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6 Eg. Transistor Current flow is dependent on control signal (gate) Current changes based upon the value of the control signal (voltage between gate and source) Current (I) is therefore a function of the control signal No current from gate allowed (ideal) Source Control (Gate) Drain (lots of Electrons) V > 0 I
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EE302 Chapter 2 - Part1 - Basic Circuit Theory Part 1...

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